Compare the Maserati Quattroporte 3.2 V8 Biturbo - [1996] vs Iso Fidia 350 5.4L V8 - [1967]. 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 Maserati Quattroporte 3.2 V8 Biturbo or the Iso Fidia 350 5.4L V8. We'll leave it up to you to decide which is your favourite.