Compare the Oldsmobile Delta 88 Royale 7.5L V8 - [1970] vs Porsche Cayenne GTS 4.8 V8 - [2012]. 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 Oldsmobile Delta 88 Royale 7.5L V8 or the Porsche Cayenne GTS 4.8 V8. We'll leave it up to you to decide which is your favourite.