TR6 from September 1972 - Carburettor models from engine no. CF1, P.I. models from engine no. CR1 ? Spitfire from January 1972 - Mk4 from engine no. FH25001 and FK25001 plus all Spitfire 1500 (1974-80)
TR250 (1967-68), TR6 Carburettor models to chassis no. CC85737 (1968-72) and TR6 P.I. models from chassis no. CP75001 to CP77718 (1971-72) ? Spitfire Mk3 and early Mk4 to engine no. FH25000 and FK25000 (1970-72)