You'll get off cheaper that way. For going nitro to electric, all you have to get is battery, motor, and esc. For going electric to nitro, you gotta have engine, tank, rx battery, extra servo for throttle, fan, clutch/bell, and it's all kind of an expensive PITA to get together if you don't have a bunch of it already. Yeah, it can be done, but your probably better off buying one instead of converting one.