If your looking for the road champs issued 1997 version, they pop up on ebay with some regularity. Just keep an eye out.
If you are looking for a custom, go to www.code3customs.com and click on the 1:43 scale cars, then Virginia. It runs almost $30 because of the custom paint job, but I've got one (and several others from them) and they do very good work.
If you have any other questions you can reach me at daughters@cablespeed.com.