Speaking of Saito engines I saw a used older 150 this weekend I can get for about $75 to $85, the hold back someone unqualified has taken it a part. The back cover gasket is thin cardboard and the exhaust pipe and carb are in each other's port into the cylinder. It was dirty but I didn't care about that, it did turn over and had compression. I was tempted but I'm not working and didn't want to spend the money on a "maybe" engine. Would you take a chance on something like this?
Here is what it looked like new:
He had an unassembled O.S.Graupner Wankel rotary too.