First....thanks for all the help. I've learned a lot from this site. I just purchased the rear end out of a 75 Nova yesterday. It is a 10 bolt with 8.5 and 2.56 gears. Everything measures correctly and it should bolt on. My 69 Camaro currently has the 7.5 rear end out of a 82 Camaro that was modified to fit. I want to end up with an Eaton posi and 3.73 gears in the Nova rear. If i am correct, the Nova should have 28 spline axles and the 82 rear should have 26 so i should try to use the Nova axles. If i buy an Eaton posi for 28 spline axles, will 3.73 gears fit OK? I also noticed the axle seal and/or a brake cylinder are leaking on the Nova rear. Is the axle seal included in a rebuild kit? Could i use the brake shoes and plate off of my 82 rear end?....they are in better shape than the Nova's, but the axle tubes appear to be different sizes. Any help would be appreciated. The weather is starting to cool off here in Missouri and I'm gettin the urge to drive.