Want to buy 8.750, 10 x 2-1/2, 5 x 4.5 rear drum backing plates.

Bought axles from Diff and now need the backing plates. Would be interested in drums also. Fishing here because at this point it's hard to swallow the close to $600 bill for loaded set but it may come to that. Also, I will be willing to listen to any options or suggestions. Thanks.