I now need to piece together the brakes for my rear end. I have an 8.75 and I plan to run 10x2.5 brake shoes.

I don't have any of the brake hardware on this particular rear end (including no backing plates at this point). But, I do have an A-body 8.75 with the hardware as well as my A-body 7.25 (with 10" shoes) that is currently on the car (68 Barracuda). I know I need drums, shoes, backing plates, and the retaining springs/shafts (that hold the shoes in place). I expect the wheel cylinders will be required as well (but I'm not sure).

But, is there any compatibility between the rest of the hardware - springs, tensioner, etc? Can I reuse the rest from either of the 2 extra rear ends I have? It would make sense given that they are the same diameter.