Wow, just took a browse on EBAY, weren't they $150 or so at the dealer? I had them in my hand a couple weeks after buying my 04 but thought that was a bit too much, wrong! I'll give them a call and see by chance if they still have them in stock...
I'd assume these guys put all their parts on EBAY but you might want to check with them, they seem to get alot of GTOs in.
http://cgi.ebay.com/ebaymotors/04-GT...79198797QQrdZ1