http://cgi.ebay.com/ebaymotors/2005-Porsche-Carrera-GT_W0QQitemZ180086371794QQihZ008QQcategoryZ33615QQ rdZ1QQcmdZViewItem
$95,000? Really? Somehow I doubt there is a part number, but would Porsche charge $95k for a production motor? That seems absurd, even for the CGT.