Technical Hate to do this…GM Rear end ID needed

You are correct….I'm right at 60 inches from tire mounting surface to tire mounting surface.

 

The 73(?)-78 Novas had that smaller 7.5 inch ring gear 10-bolt rearend. Earlier 68-72(?) had the better 8.5 10-bolt. I may have the exact year changeover wrong, but I would guess you have a mid-70's Nova rearend. The 67-earlier used the 8.2 10-bolt.

The good thing is as long as the drum diam and show width is right, all those GM brakes are pretty similar. So it makes it pretty easy for replacement parts, just bring the old ones to compare and use a Nova as the first guess for application.

 

Awesome! Thanks for the tips!!!!