Cleaning of the head is limited to blasting, camshaft and rocker gear must remain as standard. Injection systems are allowed only on models fitted so as standard. Needles and Jets are free. Choice of Air Filter is free. Standard fuel pumps must be used.
Fuel filters are free.
Inlet manifolds are free. Limited Slip and Torque biasing differentials are prohibited. All bushes must be of the original material. Additional brackets or adjustable suspension is prohibited. Shock Absorbers are free.