RE: North Star Engine
I had a Fox 45 BB in mine. It was very fast and flew great off the water. I lost an elevator connection and the plane went in. I have never given up on building another one, just havent found one yet. I have seen a few Fiberglass versions on the market and have never figured where they came from. CG is a problem and needs lost of lead in the nose if you decide on a larger engine.
Pete