[ram153624]

Thanks for the responses, LostMy65 and dieseldude4bt; I will not buy that 1981 frame. So now I have to find a frame that will work. I know that the 1960-66 frames are the same, and that the later model front disc brake cradles will bolt into the earlier frames, but I wonder what later frames will work with the 1960 cab. Dieseldude4bt mentioned a Suburban frame shortened will work, but what years?
I'm thinking of using a Cummins 4bt with a TH400 in this truck.
I'm halfway through the buildup of a stretched 1948 Chevy half-ton on a 1993 Dodge 1-ton dually chassis, with a Cummins 6bt. I had to move the engine and transmission back 10 inches, and build a doghouse under the dashboard. I will have to widen the front fenders about 2 inches so the wheels don't stick out.
I'm also building a 1966 C10 that will have an LT1 with 4L60E using the fuel injection, and a Caprice fuel tank under the bed.