Hi Steve, I personally would not go anywhere near that one it looks like cheap trouble until you get the bill for the rebuild, go for a later engine thats got some history and runs, not some vague statement that it did and then spent an indeterminate time in storage, no milage, I think he wants to go to the pub on someones £80, I have made the same mistake in the past especially when driven by desperation, take your time send your cash wisely and make sure what goes in at least works.
Steve