Unless I have a very close relationship with the engine builder and trust his abilities without any doubts, I consider any engine I can't run before purchasing to be a "rebuildable core" and make an appropriate offer. Lot's of people think they're selling a Lamborghini V12 or something similar!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!