[Shooters_7]

I'm looking at a 1957 1.5 ton truck. It has six lug wheels and is in fairly good shape. I thought the wheel pattern would be 10 lug but guess not. Is there a disk brake set up to modernize this truck with? How reliable are the two speed rear diffs that came with the truck? What are the main issues with these old farm trucks other than rust? Thanks for the help!