Check if the post-51(?) 3/4 and 1T axles have the same bolt pattern for the backing plates. If so, the brakes can be transplanted to your axle. Otherwise, get a post 51 3/4 or 1T axle. The 3/4 will have a 4.57 ratio, and might make for better highway driving. There are many posts and threads here about changing ratios on these trucks.
Good luck.


Current fleet (subject to change w/o notice)
\'49 GMC 3/4-Ton , 60 Austin Healey Frog-eye Sprite (some assembly required), 2011 Dodge Avenger, 2015 Jeep Cherokee. No, they don't all run.
My other ride is a (B737)no, (B767)no, A320.... Update... was Embraer E190, now Boeing B787.

Knowledge is a wonderful thing, but ignorance means you don't know you can't do something.