Maybe you would like to gamble ?
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=1862433171&rd=1
In the event the auction motor has problems It would be good for parts. After using the parts you could sell whats left and likely get more money if all parts are sold separetely. Keep in mind that if you had a bad leak(exhaust) from the head you stand an excellent chance of having a damaged surface on the jug and head. Also this motor has the better valve guides and its a 7R case which is the strongest case for the run of magnesium cases.
If your feeling lucky maybe it will be a bolt in and go. It looks to be 100% complete and has the carrera tensioners ($400.00 value) to boot !
Kurt Williams