As above really, the IB5 box i'm going to be fitting has quite a short final drive (similair to an XR3i) and so will be high up in the revs at motorway speeds.
I was wondering if it's possible to fit a longer 5th gear retaining the final drive for 1st-4th acceleration? Or would this not work as there would be less teeth and so not engage properly?

Oh and if anyone knows where I can buy a BC/IB5 5th gear puller that would be very handy as I cant find one for shit!! lol

Cheers!