Summary

I took the Camaro lug nut cover by jrweikle and joined it to the threads from Chevy S10 lug nut cover by jasondaj who had the correct threads. Adjusting for size and removing some material it now works for the C4 Corvette. Thanks to their good work, I was able to have a print ready drawing in 10 min instead of drawing the whole thing.

You can print it or them upright with no support.