I don't know of any direct replacements for the front spindles. The question might be asked on the Stove bolt forum. I have a 61 that I changed the front cross member from a 79 1/2 ton, I bolted it in not a graft. It sure was a lot of work but I got the disc brakes and the update of handling that I was looking for. All the pictures I took during the modification were prior to digital. My skills are limited on converting the pictures in my album but I might be able to assist you verbally if that's the way you want to go.