Chart for 8.75 axle flanges?

Most all BBP A body replacement axles have the offset to use B/E/C body backing plates and drums. SBP A body drums can't be redrilled for these axles because of this difference in the flange offset, plus the center register is significantly larger on the BBP axles. Any 10-11" B/E/C (4 1/2" BC) drums will work.
For cheap rear discs look into Jeep Grand Cherokee (early 4 1/2" BC) or Liberty rear discs, basically bolt ons with a few minor mods. Lots of threads on here about those.