Small bolt pattern axle to big

At one time they (Mancini Racing) offered Big Bolt axles that you used the 1 3/4'' shoes drums and backing plates.
No longer offered now. The axles are set up for the B body 10x2 1/2''. Dr Diff has all the parts for one stop shopping.
You may find someone on here that has the brake set as they went 4 wheel discs and will sell to save a few bucks.