TR5 und TR250 (1967-68) ? TR6 to 1971 - P.I. models to CP54584, carburettor to CC67893 ? GT6 Mk2 (1968-69) and Mk3 to 1972 - European models to KE2883, USA models to KF2883 ? Vitesse 2-litre Mark 2 (1968-71)
TR5, TR250 and TR6 (inlet valve) ? TR2 to TR4A (inlet valve) and TR4 from engine no. CT21471 plus all TR4A (exhaust valve) ? Spitfire Mk3, Mk4 and 1500 (inlet valve and exhaust valve) ? GT6 (inlet valve and exhaust valve) ? 2000, 2.5PI and 2500 Saloon (inlet valve)