Here's one that doesn't appear to be very much upon first inspection but turns out to be a good core engine for the Rickman Maico I'm building. I know the bloke selling it and he's pretty sure the gearbox and clutch aren't siezed and the cases are almost virgin with no major damage, rare for squaries. It's mine now.
I'll combine this engine, the cutaway fin engine I got from Paul and my brand new unused 250 crank and NOS Mahle piston from the stash and the result should end up a good little squarie for little money. You've gotta grab this squarie stuff when you can because they're getting harder to find. Luckily square barrels don't have as much value in the US as they mostly race with the radials. You've got to have an oval barrel for their equivalent to out pre '70 which is good for us.
http://cgi.ebay.com/ebaymotors/Vintage-Maico-bottom-end-60s-motocross-mx-AHRMA_W0QQitemZ230396977694QQcmdZViewItemQQptZMotorcycles_Parts_Accessories?hash=item35a4bae21e
