8.75 brakes

So I got axles from Dr. Diff to fit my 8.75 rear end, 1969 Dart. Changing to green bearings, any how, the register on the new axles is too big. The drums I have, which were on the old axles, have the small center hole. Drums are 10 inch by 1 3/4 inch. Any chance to get the drums I need? Large center hole, bolt pattern is LBP.