I have two Syssa engines that have been sitting around my shop for several years. I decided to build a biplane use the "good" engine on it. My "backup" engine has bad bearings. I don't know if anyone at Syssa is still working on engines, so I don't want to pay the postage to send it in if it is just going to rust away on the dock.
Anyway, I made a Chuck Cunningham design "Lazy Ace" biplane out of Coroplast and put the Syssa on it. The build is covered on another thread.