4x4 conversion

[71blacklighting]

im thinking of buying a wreaked 71 2wd long wheelbase fleet side truck the frame is bent and i have a 71 short stepside that id like to have a 67 or 68 front clip for the long wheel base needs the nose so ill just buy me a new 67 nose to put on my stepside and put that nose on the wreaked one and i want to get a 4x4 frame my dads friend has like 10 67 to 72 junked trucks that i can have anything i want just go get it and when i went up there last seems like there was a old 71 or 72 long wheel base 4x4 3/4 ton truck up there i can get the frame from what all would i have to do to make the change do i have to have the high hump cab if so can i buy a hump someplace and cut the small hump out and replace it with the high hump and what else do i have to do thanks alot guy if i get that truck ill show u a pic of it it hit a parked car at 65 mph...lol it ugly for now