This info/post may remove those doubts you were having about dual wheels and disc brakes.
https://www.stovebolt.com/ubbthread...del_GM_disc_brake_swap_.html#Post1147540


•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
---All pictures---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-