Hey thanks to all the guys who have helped out with my car, but now i have anothewr question. I have a 1972 chevelle and it has the fac. rearend which is a 10 bolt (don't know the gears), but i'm looking for a 12 bolt rearend which i could put some nice gears and make it posi. I was just wondering if anyone could tell me which cars and years i could use a rearend from. And if yall have any gear suggestions i would gadly apperciate the advice. Thanks guys