10 X 2.5 in rear drum brake assemblies for 8.75 diff.

One other thing is that the 1.75" brakes will work
If you have 1.75" 8 3/4 backing plates and drums you will need A body brake back spacing axles.

As noted above, the drums will need to be redrilled for 5x4.5 and the center index MIGHT need to be made bigger (unless the axles are made with the smaller A body register)