Fumblin. You can put clips on the newer rims. I put mine on with 3/16 bolts, drilled and tapped the rims, then ground the end off the bolts flush. I've also seen them welded on without any problems. The temper of the clips isn't that bad.

Tab - Your hubcap options will depend on which rims you have. If they are GM, the old caps should fit if you add the clips. Otherwise, you will end up with caps that say brand X on them.

Fred
52 3600
69 C-10