You are an awesome Dad, building airplanes for you children! Maybe one day I can do that for my kids.I had that combination in my super cub on floats and it was great. Smooth and powerful. To be fair, I did not hit the 500-hour mark where some people have had issues with hub seals before I sold it, but I was confident enough to put a whirlwind 300 on the RV-7A I just built for my daughter.