MK4 Doner Build

Factory Five Racing MK4 Replica

Donor Build Info


If you are lucky enough to have located a good usable donor then this page will provide you with  a complete list of what is included in the Base Donor Mk4 Replica Kit.


There are many options that can be added to these cars and the best way to gain a complete understanding of what your “Ideal Cobra” would cost to build is to sign up for the WCC mail list using the blue panel on the right. When you do so you gain access to subscriber only in-line interactive work sheets that allow you to option your Cobra as you  envision it and as you do so the spread sheet will price your build for you.


Experience tells us that IF you stick to the plan you embodied in the spread sheet, and that’s hard to do, you will build the car for within $1500 of what the sheet shows. (assuming of course that your estimates for Paint etc are in line with costs in your area)


Complete list of Included parts in thebBase kit follows. Note that Items listed in Red Text are parts that Factory Five is required by the Cdn Federal DOT to remove from the kit in order to allow them to be shipped into Canada. All of the removed parts are readily available from alternate sources.



  • Frame: Complete jig-welded original style 4”
    round tube frame.  Includes all mounts ready to accept small block Ford and
    1987-2004 Mustang running gear.  Kit can be ordered to accept a wide variety of

    • Includes three-point roll bar, powdercoated gloss black
      to match frame
    • Includes mounts to accept passenger side roll


  • Body:  Hand laid 3/16” laminate composite body
    and panels made with vinylester resin. 

    • Driver and Passenger doors with new molded door
    • Hood with new molded hood liner, and centered hood
    • Trunk with new molded trunk liner and improved mount
      face for license plate light. 
    • Includes secondary body fasteners assembly.
      • Adhesive backed and foam weatherstrip
      • C-channel door edge trim and fasteners
      • Plastic end caps and body u-nut fasteners
      • Trunk and engine bay seal, push on rubber bulb
      • Rubber hood and trunk bumpers
    • Includes multi-adjustable door hinges with bronze
      bushings and kit w/fasteners
    • Includes vintage trunk hinge kit, hinge support plates
      and fasteners
    • Includes competition hood pin set with mount plates and
    • Includes original design quick-jack competition bumpers
      w/stainless steel sleeves and fasteners.


  • Chassis Aluminum Panels: Includes over 40 CNC
    cut, pre-formed 6061 series aluminum panels for cockpit, trunk, and engine bay.

    • 1200 pre-packaged rivets1/8” short & long, 3/16”
      short & long
    • Complete Mk4 cockpit aluminum with optional block-off
      plates and patch covers
    • Engine bay aluminum assembly with aluminum nose
      sections and splash guards
    • Aluminum trunk lid liner has been replaced by molded


  • Front Suspension:  Includes high quality Koni
    brand mono-tube, rod-end, coil-over shocks, tubular upper a-arms with ball
    joints, adapter brackets and all grade-8 mounting hardware. Front suspension
    comes ready to use Mustang lower control arm/spindle and brakes.

    • Koni brand high performance mono-tube, rod-end shock
    • Coil-over kit for Koni dampers including spring hat,
      threaded seat and 500lb. black powdercoated performance springs
    • Adjustable upper control arms with ball joints and
    • Grade-8 mounting hardware.


  • Rear Suspension:  Mk4 base kit includes rear
    axle brackets, fasteners and axle straps to mount your Mustang 8.8” rear solid
    axle and brakes. Comes with all fasteners and hardware required to


  • Brake/Fuel Lines:  Base kit comes with
    pre-flared brake fuel lines,
    (3/16”, 1/4″ and 5/16”) and
    fasteners to use OEM Ford
    Mustang fuel tank and system.  Includes polished vintage Aston LeMans flip top
    gas cap, integral modern fuel pressure cap and adaptor kit.  Fuel lines,
    connectors, filler neck and fasteners

    • Pre-flared fuel lines (1/4” and 5/16”) w/unions, barbs,
      hose clamps and high press flex lines and fasteners
    • Aston LeMans original polished aluminum fuel cap with
      integral pressure cap, gaskets, ground strap, fuel hose to tank


  • Steering Kit:  Steering adapter kit to utilize
    Mustang steering rack includes upper shaft, pillow blocks, flange bearings,
    fasteners, lower shaft and u-joints.  Features a collapsible sterring shaft,
    Vintage wood and aluminum steering wheel w/aluminum boss, center section and

    • Lower steering shaft w/’87-93 rack adapter (3/4”-36
    • Upper steering shaft, spring washer and
    • 14” Vintage wood and aluminum steering wheel w/boss and
      ceramic F5R center section and fasteners
    • Steering bearings and hardware, including flange
      bearing, pillow block bearing and fasteners


  • Cooling System/Parts: Electric cooling fan and
    mounting hardware, extensions for radiator hoses, and all necessary fasteners.

    • Electric cooling fan and mounting kit w/connectors
    • Radiator mount kit and fasteners
    • Stainless Steel radiator hose kit incl. adapter kit,
      fasteners and hose


  • Misc. Engine Accessories/Side Exhaust/Mounts:
    The Mk4 base kit is configured to accommodate the 5.0 or 4.6L engines.  Kit
    comes with alternate drive pulley assembly, oil filter relocate kit, and exhaust
    assembly to adapt Mustang engine and headers to vintage side exit exhausts.

    • 4-into-1 Side Exhaust, bare steel w/rubber hanger
      brackets, gaskets and fasteners
    • Oil filter relocate mount with fittings, hoses, barbs
      and fasteners
    • Spin-on engine block adapter
    • Alternate drive pulley, spacer, pulley wheel and
    • SB Performance air filter, conical
    • A/C replacement pulley kit and custom length fan belt*
      with fasteners.
    • Accelerator Cable Assembly: includes the cable, return
      spring and retainer.


  • Electrical and Gauges/Dash Assembly:  Base kit
    parts are included to adapt Mustang wiring harness and EEC IV computer.  Kit
    comes with components to build your car with an authentic original street style
    dash. Complete assembly comes with aluminum dash, padded dash cover, dash
    buttons, toggles and indicator lights, switches, and horn. 


    • Battery cables and hold-downs with fasteners.
    • Battery ground strap
    • Insulated line clip hardware and fasteners
    • Cable ties, wire loom and flex grommeting
    • Mk4 pre-cut original style aluminum dashboard
    • Padded dash cover, black vinyl w/dash buttons and
    • Dash indicators, Red, Green, Blue dash lights
    • Mustang gauge conversion kit with machined bezels,
      spacers, wiring extensions, fasteners and lenses.


  • Complete Interior Accessories:
    The Mk4 base kit comes with all the
    interior accessories you need and want.  Authentic original style seats, door
    latches, toggles, rear view mirror, and more, create a full interior that is
    period correct.  Check out this full list of standard parts and
    • Authentic style roadster metal framed seats, black
      vinyl w/fasteners
    • 5-point Simpson Brand H-harnesses.  3” wide driver and
      passenger, frame mounted  w/fasteners
    • Complete cockpit carpet set, black
    • Emergency brake boot, black leather
    • Authentic interior rear view mirror w/fasteners
    • Original style door latches, fasteners and leather
      check straps
    • Authentic chrome shifter handle, shift knob, boot,
      polished ring and fasteners
    • Original style rear view cockpit mounted and side
      view/flank mounted mirrors.
    • Authentic 14” wood and aluminum steering wheel with
      polished aluminum boss (listed in steering assembly), and F5R ceramic center
    • Covered aluminum dash with all dash buttons, toggles
      and indicator lights. 
    • Mustang gauge conversion kit with machined bezels,
      spacers, wiring extensions, fasteners and lenses.


  • Exterior Accessories and Lighting:  Along with
    the goodies on the inside of the car, the Mk4 base kit is loaded with the right
    exterior parts and trim.

    • Authentic Chrome-on-Brass vintage windscreen, tinted
      with side bars and fasteners.  DOT safety glass compliant
    • Authentic original three-lock set including T-trunk
      handle, L-shaped hood handles, matching keys, cam wedges, fasteners, latch pin
      sleeves and plastic end cap
    • Authentic license plate light and bracket with
    • Authentic 3.5” Aston roller gas cap, polished cast
      aluminum with adaptor kit and all fasteners.
    • Competition hood pins. 
    • High quality laser-cut aluminum side
    • Ceramic F5R badging nose and tail
    • Original style headlamp assemblies, including buckets,
      halogen headlamps, trim rings, and fasteners (DOT approved).
    • Original style front turn signals, amber and red twin
      filament rear tail-lights (DOT on all lighting).
    • Original style Quick Jack bumpers


  • Pedal Box Components:  Utilizing the Mustang
    pedal box, we supply you with pedal box adapter kit, fasteners and accelerator
    cable, pedal capture, return spring and ball stud retainer, w/fasteners.


  • 87-95 Mk4 Roadster Assembly Manual:  Bound
    assembly manual that is over 200 pages long.


  • Fasteners:  Over 1500 top quality zinc plated,
    chrome and stainless steel USS and SAE fasteners, numbered and packed
    individually by assembly.


Notes regarding 1996-2004 Mustang Donor Cars:

Owing to the complexity of different Mustang parts from 1987 to 2004, we have two simple
packages that address these parts differences.  Basically, all the kit parts
that we provide are interchangeable except for a few items.  Customers who use
Mustang parts from 1996 to 2004 get a few extra parts and don’t need some
others.  Parts identified in the preceding list with an asterisk * are
replaced with the following parts for customers using 1996-2004 donor cars


  1. Ignition Switch:  Includes the key, switch and
    electrical connectors to use with 96-04 parts.
  2. Brake Hydroboost Mount Assembly:
    For customers using

    96-04 Hydroboost brakes.  Includes tool.
  3. 96-04 Radiator Mounting
  4. 4.6L Oil Pan and Transmission Mount

    later model oil pans are too low. 
  5. Fuel Filler Tube Assembly and
    Radiator Hose Assembly
  6. A/C Eliminator Bracket
    Assembly and Air Filter Mount Assembly

Contact Info

By Phone 250 777-3031

By E-Mail