Matt - I added a 3.25 posi setup to my fastback, which has a toploader 4 speed. It was originally a 3.00, but had been changed to a 2.80 open.
I think the 3.25s are a good ratio, as they will help you off the line but not rev you too high on the highway.
I believe you can find 3.25s in Mustang II 8" rears. Glenn / MrGEM was nice enough to look for some for me last year. Give him a PM as I think he can give you the rear end codes so you know what to scout for. Good luck ! Dickson
1965 GT fastback
There's a fine line between "hobby" and "mental illness" - Dave Barry
I think the 3.25s are a good ratio, as they will help you off the line but not rev you too high on the highway.
I believe you can find 3.25s in Mustang II 8" rears. Glenn / MrGEM was nice enough to look for some for me last year. Give him a PM as I think he can give you the rear end codes so you know what to scout for. Good luck ! Dickson
1965 GT fastback
There's a fine line between "hobby" and "mental illness" - Dave Barry