man i always recommend kennedy_power. he knows his sh*t man! a good port and polish will give your engine way more power than an overbore.
i had a factory 7 pipe for about 3 months. it worked great and had lotsa peak power, but kennedy talked me into trying the shearer pipe (which is designed to maximize the power out of a trail port WAY better) and i'll never go back! man, that f*cking shearer pipe makes the engine's band SO much more usable and responsive.
i HIGHLY recommend kennedy's work and the shearer pipe. in fact you can see the dyno charts on a lot of these pipes on kennedy's flickr.
i had a factory 7 pipe for about 3 months. it worked great and had lotsa peak power, but kennedy talked me into trying the shearer pipe (which is designed to maximize the power out of a trail port WAY better) and i'll never go back! man, that f*cking shearer pipe makes the engine's band SO much more usable and responsive.
i HIGHLY recommend kennedy's work and the shearer pipe. in fact you can see the dyno charts on a lot of these pipes on kennedy's flickr.
i'm pretty excited to do it 
