It is the same one that is on the C5 Corvette. You might want to try corvetteforum.com in the parts section. You might even get it for free just pay shipping. Hope that helps you.
I found this front license plate bracket and rear plate frame listed on e-bay a short time ago. I'm not associated with this listing in any way/shape/form.
Thanks shiftz! I put it on my watch list for some serious action in about 4 days and 21 hours. You guys take it easy on "emaxxwellsmart" when the bidding get going!