'72 Scamp

If memory serves, (sometimes it doesn't) I think I swapped all the stuff from the 7 1/4 over, I think if you have axles for the 8 3/4 with the same bolt pattern everything should swap. If you don't have, I think at least the backing plates will, then all you have to do is find drums to fit. If your 8 3/4 axles have the bigger bolt pattern you could use drums from a '73 or newer 7 1/4.

Like I said, my memory is a little sketchy on this, but I am pretty sure I left the backing plates in the car hooked up to the e-brake cables and bolted them to the 8 3/4 when I positioned it on the leaf springs.

A little extra work when you do the swap, but may save you a little $$$.