Maybe am I confused on the question. But, an axle swap is not needed. Just bolt on the disk brake conversion kit/bracket to your existing axle/knuckle. You must install a proportioning valve and most valves have the residual valve built in. Additional valves are not needed. You must convert to dual circuit MC made for front disk/rear drum setup. I added a booster and love it. But, trans cross member modification is required.

Booster/MC/prop valve

Last edited by DavidF; 08/13/2014 3:20 PM.