Any aftermarket metal-type radiator may be used as long as it mounts to stock location. Thermostats are free. D. Intake System 1. 1600cc may use a cone-type air filter. 1800cc must use a stock air box.
Filter is free.
E. Fuel System Unleaded fuel filler trap door and restrictor plate in filler neck may be removed. F. Ignition System 1. Any spark plug may be used. Any spark plug wire may be used. Timing is free.