im building a bike thats main setup is 28 mm carb and manifold new crank and 172 kit cdi and flowed cases and gear up (standard pipe) im buying a new crank and already have new bearings but because the bike isnt crazy power and isnt going to be wragged im not going to fork out 300 for an amazing crank . should i buy a brand new standard crank or a new extreme racing crank. i wil be keeping this bike for the next 10 000 miles so thats all im bothered i want the most bang for my buk and im using lots of parts i already have thanks