A kit of parts to build a Riley 12/4.MPH/Sprite rolling chassis with narrow track axles. Correct rear axle trunnion's, 19" wheels, new hubs and half shafts, new wheel bearings, new aluminium shock absorbers, new leaf spring's, complete steering column with correct mount, torque tube, dismantled 12/4 engine, brake pedals, 13" girling brakes, TT..