converting to bbp 11x2 drums

A-body axles use a totally different spacing from the axle flange to the brake backing plate. I'm talking 8 3/4 rears B,C,Vans, Trucks all use the same spacing. When you order axles which I assume you are going to BBP? They will have the right spacing to use your C-body brake plates.

so is that why there is a difference between the moser axles?