Grigg, I just saw your reply to my email. I have the clamp plates on both fronts, and the 10 lug on the rears. All the wheels seem to be originals.I understand that mine are the hub-piloted with the flat lugnuts. I can't see a reason why I couldn't switch to a stud-piloted wheel and use the correct lugnuts.The lug circle is identical on either wheel according to the chart in the tech article. If I wanted to use a stud-piloted on the front, I would have to make a new 5 lug clamp plate to match the conical lugnuts, but the rears should bolt on. Must be something I am missing? Are the lugs themselves identical between year models?