Cadillac converters and disk breaks. Both hard to explain.

Have you looked here?
https://tuckersparts.com/product/Disc-Brake-Conversion-Kit-F-8LUG/

At https://www.67-72chevytrucks.com there is a suggestion to swap the entire front suspension for an 1981 GMC.
Maybe other swaps are possible.


"Adding CFM to a truck will only help at engine speeds you don't want to use."
"I found there was nothing to gain beyond 400 CFM."