10 X 2.5 in rear drum brake assemblies for 8.75 diff.

furz4 said
Probably because most of the 70's cars with 8 3/4 rears had 11" rear brakes, I am not sure I have seen one that didn't except for the original A body 8 3/4's that used special narrower brakes and drums

You said you may have a set of 11 inch earlier. Would that include the shoe spreader bar and e brake bar?