I swapped my frame for a 1978. My truck is an AD 1 ton. So there is a differnece in wheel spacing but you can check out my photos in my signiture to see how I did mine. Frame swaps are not for everyone. I have seen several on this site that use the original frame but use donor parts from 73-87 trucks to get better running gear up front and in the rear. Look around you will see lots of info.
