Changing to BBP on 83/4

BBP brakes are wider (10x2.5" vs. 10x1.75"), so the backing plate goes deeper in toward the car to account for the brake width. Whichever drum you use needs to be mated with the correct depth backing plate. I think Mopar also made 10x2" but I am not sure which years/models, maybe someone can verify that.[/QUOTE]

Thanks, most informative.