JD I'd look up the king pin specs for that '72 axle and see if they are close to those of the '54. If so I'd take both apart and see if they are close enough to adapt the spindles.

Does the '72 C40 have disk brakes on the front?


1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more...
It's true. I really don't do anything but browse the Internet looking for trouble...