Travis- Here's how I did it on my '60 930. These rims are from a 55 series Deere, probably found on other Deeres also. The I.D. of the bolt flange fits EXACTLY over the cast centers. You just have to make 2"x2" blocks for the wedges to push against. I used 2x2 1/4 wall tubing, and welded them on. You also gotta weld on a drive lug. These rims are 16", and I have a pair of 18" to go on another tractor. Cheap and easy.
You going to Tunica?