> I got a 3.5:1 rear axel on my 280Z 1978 5
> Speed if a put 3.9:1 rear axel what will be
> the difference
Yannick, a lot better off of the line. You will lose a little on the top end mph, but you will be still be able to go plenty fast. If you do mostly city driving, you will benefit highly. It is a bolt in on a 78 280z. Joe
We have a lot of those if you need one.