I just went through this. I upgraded to 5/8 studs with the accuride wheels. (new for front and outer on back, and then old wheels on back inner to fit around brake hub. Instead of clamping plates I went with swivel nuts from lug nut king on ebay. I think they look great. I powder coated all the wheels a classic white. I upgraded the studs as the accuride wheels have a 5/8 stud hole. I can give you part numbers if you want. front inner wheel seal was the hardest for me to find. 1962 P30 is the same size from rockauto. I did a lot of measuring for the studs, but finally picked some parts from Dorman