Personally I'm surprised ebayites bid on high mileage specialist cars like this one without an inspection. Looks a million dollars but......
http://cgi.ebay.co.uk/JAGUAR-XK8-CONVERTIBLE-AUTO-FULL-LEATHER-THIS-IS-MINT_W0QQitemZ290291303915
Even more so, as those early XK8 had Nikasil lined engines that were eroded by sulphur in petrol.....or so I'm led to believe.