Approximately 25 cars were built in 1972 with a injection 2.5L engine
2 engine type were available :
911/73 for the short stroke version (66mm)
911/70 for the long stroke version (70.4mm)
Most of the cars has hight butterfly but some engine had the slides 916/Carrera 10
Factory option M471 and/or M491
The 72 cars had steel body parts including doors, front fenders and front bonnet to reach the new homologation weight : 960 Kg