well i should hope so.. m6 is one better than a m5
I took a 6 off a 626 and pulled the "5" off the m5 logo on the back of mine and swapped them , and i swear i went waaaaay faster

, im gonna take a video next week where i put an "8" from a v8 on it and hopefully i will be the fastestest car around ...
heh .. but seriously .. cool vid