Swapping 9 inch to 10 inch

So I have a rear end from a 63 dart 3.23 gears and want to put it in my 72 valiant . I know the 63 rear end has 9 inch brakes and I have 10 inch . Would I be able to swap no problem? Not sure how to remove the backing plates. Anyone got suggestions? Thanks in advance I appreciate the help moparians :D:burnout: