Since SpeedAddict didnt give you a model, I'm going to get an OS .18 CV-RX(s) for my t-maxx, and there is also a verson that fits the MT2, the . The 4.6 is way to big for an MT2 unless you get aluminum everything, so it doesnt break everything on a crash. (you would also need to get a big block upgrade kit.)

Looks like a great motor for a great price. about 100 on ebay, 110 at tower.

http://www.osengines.com/engines/osmg2104.html