The OS LA series
I built a light 4 star just for an extra LA46 I had around. The plane weigh's 4 LB's total and will hover, hand starts on first try and is a very reliable motor, just stock including the baffle, a dubro exaust deflector and APC 11X5. I dont think you could buy a better "bushing" motor. Only trouble is that there arent many "light" 40 sized planes around, the motor is best suited for a trainer or other 40 sized with light wing loading.