Sorry but don't know anyone that imports them(m-speed), never heard of next engines???
WebSite for M-Speed
e-mail them to see if they have a dealer near you.
The only way I can get the Carlsen motors are from guys at the tracks.
That .12 motor I got from overseas didn't have the same porting as the one I got from a guy at the track, crank also wasn't reworked the same, but a friend of mine got one a month later from the same guy at the track and his was just as fast as mine. These were both sealed boxes from the guy at the track. So I think something with a special model number, which I can't tell from the box makes them different, cause I know the guy that sold them to us doesn't MOD motors.
Bradley J. Gotori