I have a set of steel wheels and would like to use them along with the copo style hubcaps. I wouldnt like to shell out $50-$100 for a set of caps that dont fit. The wheels have an outside mounting knob circle thats 10 1/8th" which is what I was told was an oe dimension. If anybody has a set of copo style hubcaps or knows the measurements could you post them please? Thanks.