CG Ultimate 2-stoke advice
I have an OS 1.08 in mine it flies great with tons of power. I have 3oz of weight in the tail. If I did it over I could have put mini servos in the tail and it would have been great. Be careful with anything bigger than the 1.08 or your plane will be to heavy. If I was going to buy an engine it would definitely be the 1.20 size 4-stroke.