Murnan rb m3 is hands down the fastest engine on the market in terms of bottomend, midrange, and top end. It also will make runtime with no problem I run up on 8 scale with this motor. A buggy can not keep up with a onroad car. I would like to see a 8 scale nitro buggy keep up with my nt1 ec with Murnan rb m3 or kyosho m3 evo with jp ro9 s black mod I don't see it happening.. My rb m3 is always the fastest .12 engine on the track no matter where I go