A A/MP Well-Known Member Joined Nov 26, 2005 Messages 594 Reaction score 71 Dec 30, 2012 #1 Are the backing plates from '78-85 8 1/4 interchangeable to the 8 3/4? Thanks
1970Duster Well-Known Member Joined May 30, 2010 Messages 6,644 Reaction score 215 Dec 30, 2012 #2 Yes and no. Only works if the 8.75 rear has 4.5 bolt pattern axles.