Originally Posted by
XRT_si
Can't tell from the outside as far as I know.
Fairly sure that early Fox body Mustangs ran 28 spline. Well, at least I hope so as Wisbech told me they don't and haven't done 31 spline shafts
I'd bet mine are 28's, my car isn't going to be really heavy and will prob only have about 450hp so I'm hoping it will all hold together.