Compare the Ford Mustang 351 5.8 V8 Convertible - [1971] vs Mini Cooper John Cooper Works Cabrio 2.0 Turbo - [2022]. 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 Ford Mustang 351 5.8 V8 Convertible or the Mini Cooper John Cooper Works Cabrio 2.0 Turbo. We'll leave it up to you to decide which is your favourite.