Hey guys...thanks for the input. Seems like most people like 3.55 out back. That is what I was kind of leaning towards. 3.31...I will have to look into. right now this car is numbers matching, but I plan on sticking a 400 or 428 in it and keeping the original 350 around in the ever so slight event I would sell the car. So I guess at some point I would have to step up to a 12 bolt or 9", but for the time being Q has let me know the 10 bolt is strong enough.
