After dominating Group 4, 5, and 6 racing in the 1970s with the 911-based 934 and 935 and the prototype 936, Porsche moved on to dominate Group C and IMSA GTP in the 1980s with the Porsche 956/962C, one of the most prolific and successful sports prototype racers ever produced.
Logo de dominar os Grupos 4, 5 e 6 na década de 1970 cos 934 e 935 e o prototipo 936 baseados no 911, Porsche pasou a dominar o Grupo C e a IMSA GTP na década de 1980 co Porsche 956 / 962C, un dos prototipos máis prolíficos e exitosos xamais producidos.