I have a 51 3/4 ton Chevy and I found a set of rims from a 96 3/4 ton Chevy, installed 750/16 tires. I had to use 1/4" spacers in the front to get clearance for the tie rod ends. This setup works well and the large diameter tire helps top end with the low gearing.
If I knew anyone still wanted the split rims I would'nt have tossed em'