Tim;
It didn't give any details about the wheel material, if they are steel, you could probably get them painted instead of chromed, welding on the duz fastners for the disc's would ruin the chrome any way. Is that your pattern I thought trucks have 6 lugs, I've had a 56 GMC, a 56 Chevy, and a 59 Chevy they all had six lugs?
Steve