XJ6 4.2 Series II USA, Canada and Japan models from engine no. 8L67735 (May 1978) and european models from engine no. 8L79250 (January 1979) plus all 4.2 Series III models • XJ12 Series II fuel injection models from engine no. 7P25001 (May 1975) plus all Series III models • XJS 5.3 V12 to VIN...179736 (1975-91) and 3.6 from VIN...108026 to 179736 (1982-91)
XJ6 4.2 Series II and III fuel injection models (1978-87) • XJ12 Series II and III fuel injection models (1975-92) • XJS 5.3 V12 to VIN...105047 (1975-81)