Since you call your truck a C20 I'm guessing its a later Stovebolt with an IFS.

That being the case you can either swap a '72 to '87 IFS under it, getting the disk brakes in the process, or there are in fact kits to convert an IFS 3/4-ton to 1/2-ton spindles allowing using 1/2-ton disk brakes.

What year is your truck?


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...