Compare the Porsche 911 Carrera 4 S PDK 991 - [2012] vs Chevrolet Corvette C3 ZR2 Stingray 7.4 V8 Convertible - [1971]. Find out which car is the fastest, most powerful, lightest or has the biggest engine in our top trumps style comparison page. Find out which car has the highest top speed or is the fastest accelerating, is it the Porsche 911 Carrera 4 S PDK 991 or the Chevrolet Corvette C3 ZR2 Stingray 7.4 V8 Convertible. We'll leave it up to you to decide which is your favourite.