mega 16/15/5 motor

I was just wondering if a mega 16/15/5 motor will mount and work well with the trex xl hde? I got this motor new for $45, and what gear would I need for this? I will start my build in about a week when everything comes in. I'm new to heli's. I own a dragonfly #4, buy I wasnt happy with this, so I made to jump to a trex xl.
wish me luck, and any hints on a newbie build are welcome