Structural modifications that took place during the transformation include a full race cage, switch to safer 1800ES disc brakes all around, reinforcement of the lower A-arms, shock towers, and motor mounts. The axle is an FIA-approved change.
The B18 motor was replaced with a 0.040 bored and blueprinted B20, with the crankshaft precision balanced. The original F head was ported to establish better flow for double-springed valves. Baffling akin to that provided in R-Sport kits was placed in the oil pan to prevent loss of lubrication under heavy cornering G forces. A Volvo 240 alternator replaced the generator.
Twin Weber DCOE carbs took the place of the SU’s on the street car, connected to R-Sport manifold and ceramic coated header that terminates beneath the passenger side door. Cooling takes place through a German racing radiator fed from an aluminum expansion tank located in the location formerly occupied by the battery. An Accusump tank is mounted between the seats to pre-pressurize the lubrication system, which is connected to an oil cooler located behind the grill.