Wingedexpress1,
I'm going thru the same dilemma.
I bought a very rusted '51 axle that has been converted to disc brakes. It has a 5 lug hub and I want a 6 lug. I also have a '51 original axle with 6 lugs that hasn't been converted.
I think I can use the caliper brackets, and make the original axle work.