Just browsing some vids and noticed this in a couple of vids...
4th gear
my old williams does a ball hair over 110 at 7k with willy box
my hybrid does a ball hair under 120 at 7k with 19 box
Though the ratios were the same?
same manifolds, same tyres & wheels sizes...
Video- http://media.putfile.com/19willyboxcomp