The Porsche 956 and later 962 models could be assembled with two different rear wing configurations: “low downforce”, used mostly in Le Mans where the 6.5 km Hunaudières straight required a very low drag at the expense of downforce, and “high downforce”, for twistier circuits.

Regardless of the configuration, Porsche 956 and 962 cars were the cars to beat in any Group C competition in the early 80's.

The South African Franz Pretorius is the owner of a Porsche 956 with livery “Gulf”. Chassis number is 956 108; it was built in 1983 and raced by Team Trust. The same year, this car won the Japanese Sportscar Championship, driven by Fujita and Schuppan. It was damaged in a practice accident and, then, repaired by Porsche.

After the stop of World Championship for Makes, the car was imported in South Africa in 2003, and re-painted in the “Gulf” decoration. It raced occasionally in the Porsche Challenge Series and in some SRA endurance events.