Ive had my tsunami for a while with the stock VX .18 engine and i think im about ready to upgrade. Ive heard of putting a .21 motor in a volcano before and was wondering if redcat has those motors. And also if i traded in the .18 motor, would i still get like half price for a .21 motor , or just the other .18 motors. And thats just a thought. I would only put in a .21 if it took little modifactions, if its a big deal then i'll get an O.S .18.

by the way how much is an OS .18 if you trade your old VX .18?