I cant get mine hooked up spraying 25, and its a fourstroke. Not sure how a two stroke would react? I think it would be a little too violent to go fast, but would be fun to drive for sure.Phiddy , you need a kart like we came across in the 80's, we were running KT100 with typical kart frame at an indoor race and about a dozen karts showed up with a narrow frame , might have been square tube, engine setting behind the seat. They had to pitch them into the turns, it had to push like a "B" . but coming off every turn they pulled the front wheels a foot off the ground. Fun to watch but overall not as fast as what we had. On the subject of big UAS HP it's not just an engine , but an engine package. So you could put a pair of open 135's on nitrous and squirt it up to say 90 or 100 HP, now try an hook that up.