I got the engine back!!!! I cranked it up with a zinger 18x6 and just let it run. I swapped out to a APC 18X6 wide. At WOT you can talk over it. REAL REAL QUITE!!! It got to dark to tach it, but I am thinking 20x6 ish prop. I am going for thrust not speed. I am going to put it on a Great Planes Giant ugly stick. I am one more step closer to a 4 stroke gaser!!!