Converting rear drum brakes from SBP to BBP

cosgig said
Not once did anybody mention, or question just which rearend it is that we're talking about here!! Info please!!!

Not sure on original poster but my question was for an 8 3/4, I have OE 10" drums with SBP and was wondering if I can use my backing plate and buy 70 challenger 10" drums and shoes to make LBP, if that would work.