I found a guy selling a MR with low miles and lots of mods. It puts down about 500whp my question is around what hp does the MR tranny crap itself? I would imagine it's right around that range.

 

i dont know if you can say that it craps itself at a certain horsepower. they say that the 6 speed transmission is weaker than the 5. so if your driving it pretty hard, its gonna die out sooner than the 5 period.