I'm not sure of that one, because the backing plates have to be different, and don't recall the amount, but the axle flange to housing flange are not the same distance between
7.25 & 8.75...10" was optional w/a 7.25?
Backing plates are different at the housing, but are the same otherwise. I have 10" brake 7.25 rear in my Dart now, and have tried the 7.25 drums on my 8.75 rear...they fit.
