I first saw them at the Charlotte auto fair, but I have yet to see them on a 67-72. I was hoping someone could post a pic. They are on ebay for $99. You can get them with a red, blue, yellow or unpainted bowtie. Here is a link for the ebay ad.
http://cgi.ebay.com/ebaymotors/GM-Ch...item19b7bab4f0
I am thinking about these and leaving the trim rings off of my 8" Corvette rallys.