I have a 61 on a 65 chassis. I ran into problems mounting the cab. The mounting brackets for the front had to be moved as the 61 had the torsion bar X frame set up, and the 65 had a coil over spring set up. No big deal. just a heads up. Like everyone else said.....just have a plan. I'd also recommend getting a factory assembly manual so you can see exactly how all the bits fit together. specs for the different model variations can be found here so you can make precise mods.
