I will probably just make the tail fins out of plastic and pop myself out a balsa mold and vaccum form a canopy for it...the body is too fragile to even be used. but I want to fly it so...looking for a replacement engine. I could just order a new car type O.S CV 15 without a pullstarter, remove the head and drill and tap the top of the cylinder for the other bolt pattern ( same pattern just turned 45 deg) and use the head off of this engine...or??? any other ideas? I wonder if the same piston and sleeve are the same? guess I could contact O.S and ask them