Compare the Austin-Healey 100 BN1 - [1953] vs Chevrolet Impala Custom Hardtop 6.6L V8 - [1972]. 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 Austin-Healey 100 BN1 or the Chevrolet Impala Custom Hardtop 6.6L V8. We'll leave it up to you to decide which is your favourite.