What would be a good rear end to narrow for my 51 Dodge business coupe? I thought about 01 back explorer, 8.8. 31 spline axles and most are limited slip. Only trouble with that is, if I have bolt in axle ends installed, I don't know if the factory disc brakes will work. Been watching around for a 9 in, but limited slip units are pricey including a decent center section. I tried to find a 77 back bronco, but they've seemed to have disappeared. I think they were 58in total from the factory. Anybody got any other ideas that won't break the bank?