shortbed 4x4 frame years?

[travz500]

i am building a 64 shortbed 4x4 for the 3rd time this time i am doing it the way i should have at first but i started out with 2 wheel drive trucks and put on a newer frame but i want to go back to the 60-66 shortbed frame was told one up to 72 was the same is this true? no experience with 67-72 trucks only73-87 on that part. I got a nearly rust free cab except for the floor the ones i have had in the past the windshield lip was rusted gone but i found a 64 cab i had given a nephew of mine and its perfect so i am gettin it back but i need a original 4x4 shortbed frame and i am having a hard time finding one. I am ready to get it going gonna blast the frame paint it then on to the body and making room for a 500 hp 502 gonna be a fun truck. Ok i need to stop rambling but where is a good place to find a frame in kansas ?? hard to find any old trucks like these around my parts