Ive heard that you can use a 70-72 or 73-87 1/2 ton too and that on the 73-87 you ll have to drill some hose and it will bolt right onto your frame, I think your frame is the same width of the 70-87 but for the 73-87 you'll need the whole IFS. (Cross member)
Check out mobileortho's 1950 3600 if you want to see a SWEET install and there's a few other Bolters that has done this to
