I wanted to build a high-quality, period-correct replica of the GT40 Mk1. I knew, starting with the RCR kit, parts of it were not ‘period-correct’ yet it represents the highest quality kit you can purchase. Superformance uses the Safir MkV chassis; however, it is not a kit, it is a roller and very pricey. Safir will sell a continuation GT40 MkV yet again, not a kit and not friendly to your wallet.
So I started with the RCR and added my modifications to improve the build or ‘correctness’. This is a list of modifications added to date.
| Front Frame | Period-correct presentation of the front structure |
| Pivot front clip | Convert slide-off style to pivot style |
| Front brake ducts | Add interior ducting to improve air flow and opening appearance |
| NACA Ducts | Provide air ducting to passenger compartment and improve appearance |
| Demist system | Add defrost to HVAC system |
Single Axis door hinge | Improve hinging and adjustability |
| Anti-Instrusion bar | Increase door structure and stability |
| Door Boxes | Improve interior |
| Interior door release | Replicate original latches |
| Removable door tops | Open-roof driving and ingress-egress when doors can’t open fully. |
| Rear flares | 2″ tire flares added |
| Rear ducting | Engine, brake and oil cooler ducts |
Moveable pedals | Accommodate varying driver heights |
| Steering column | Adjustable Fore-Aft and Up-Down adjustment |
| Relocate rollbar | Move to engine compartment for cleaner passenger compartment |
| Double taillights | Period-correct of early MkI models |
| Wiper System | relocate to the driver’s side and provide an access hatch for maintenance |
| Wheelwells | Finish front splashguards and build rear splashguard system |
| E-Brake | Redesign parking brake to electric operation and improve function |
| Waterpump | Convert to electric waterpump system |
| Fuel cross-over | Connect both tanks as one system to allow for fuel injection without swirl tank |