rcjunky22... I have the os 18 engine in my mt2 and its the best thing I ever did... I limited the suspension travel somewhat so I don't sky it anymore... It takes reg jumps with no problem and I run it in cut grass all day... the engine temps stay around 250-270 all day and pulls lots of wheelies... One thing I have to say, it won't lose a race to any monster trucks... It is much faster than anything out there.