I am contemplating buying an unassembled kit that comes with a supposedly unused 2SI 690 engine with reduction box. If this thing really is unused and can be cleaned up (new gaskets, hoses, etc) is it worth using it? I figure if I can get a couple hundred hours out of it I’d be happy. But, I don’t want to waste time it if it will just be an issue. I don’t know much about the 2SI engines, except they stopped selling the aircraft versions of their engines.