RE: The unofficial Home of all that is Nitro Vee...
yeah rotary, went right in with a sligh adjustment on the throttle linkage, kinda tough to sqeeze them bu the cooling inlet/outlet on the head but it doesn come in and out trust me,I'd check tower hobbies they may have it, also make sure if you can that its the right size, mine is from an older motor, dont know if they would have changed them but i dont think they would, i like them, good carbs, plus i hate traxxas carbs. and the pipe is a definate upgrade and good reason to fix the cooling and make it right, also take note to the placement of my turn fin, note its perpendicular with the hull on that side and lined up with the strake(i dont know hwo it handled stock but this way works pretty good)still can spin if pushed though(outdrives, i love to hate them)...I really hope ppl start getting into the modding of these, the boat recieves a bad rep. because of a few flaws in design that can be fixed easy enough...