I just purchased a 1 ton 1987 crew cab 4x4 bare frame originally equipped without the heavy duty suspension, single rear wheels. I was hoping to use the axles from a 3/4 ton truck equipped with a 14" rear axle and Dana 44 front axle, but I read at the Chevy-GMC@OFFROAD.com website that the 1 tons had a narrower frame. However, in my Chevy shop manual as far as I can tell the frame widths are the same. Does anyone know for sure? If they are different is possible to move the spring pads, or is that more work than it is worth? Thanks!