Compare the Peugeot 505 2.2 GTi Turbo - [1979] vs Triumph Stag 3.0 V8 Convertible Mk1 - [1970]. 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 Peugeot 505 2.2 GTi Turbo or the Triumph Stag 3.0 V8 Convertible Mk1. We'll leave it up to you to decide which is your favourite.