Hey, I got a OS BGX 2.10 on mine and it flys great. By no means is it anemic, power to spare, unlimited vertical, and its waaaaaay lighter.
My only problem is the mess to clean up and that the motor sucks down the fuel. That motor has been great, one flip starts, all you have to do is plumb it w/ large tubing and use an aftermarket muffler.

Ted