I run mine with a Saito .82 and 3 blade 13-8 prop. pictures in my gallery. it has power galore. It will hover and torque roll but it could use a bigger diameter lower pitch prop for the low speed high alpha stuff. The Saito .82 weighs about the same as a .40 and is the same size. and sips the gas so you can run a smaller tank to save weight. $259 at advantage hobby. I have seen them on sale for less. Great flying plane BTW.