The Audi 200Q 20V Q gearbox is a slightly modified version of Audi's Standard 016 Quattro Gearbox. This box is also similar to the Audi V8 Quattro's 5 dps gearbox. The Audi S4/S6 uses a newer 01E gearbox, which shares several internal parts from the 016. The S4's O1E is very similar to Porsche's 968 six speed gearbox, with on less gear and one more output shaft... Scott