I have/had this plane with a Magnum 90 2 stroke and I will say that this plane was one fun plane. I am currently selling this to a member at my field. I also switched the landing gear to a tail dragger. I used a 14x6 prop and it would land at a slow walk while rocketing vertical into the clouds. Very strong airframe to handle the motor. Balancing was not really an issue, but be prepared to add a little weight to the tail if needed.