I'm still not sure why you couldn't use them ... it's the same principle. Or you could try and find some metal rings that are the same size. Or maybe someone would custom machine them for you .. hehe.
A.J. You're lucky your stock lugs fit on the steelies. I know other people have cracked their stock locks and lugs because they weren't deep enough to accomodate the long threads as a result of the thin steel wheels.