I'm a former 2004 GTP CompG owner. You'll see some old posts from me on here. I just had to trade in my car on a minivan because I'm expecting another child.
The starting bids on these things are $9.99 with no reserve.
I'm selling my service manuals (they were new for $135):
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=7975815790 And my Pewter GTP CompG headrest wraps (they were new for $50)
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=7975823204