Compare the Mercury Marauder X-100 - [1969] vs Pontiac Firebird 350 - [1969]. 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 Mercury Marauder X-100 or the Pontiac Firebird 350. We'll leave it up to you to decide which is your favourite.