Talk to ZXalan on Motohouton .com, he went 225.9 on his this year and built it himself!!! One Bad Busa!!!
Yeah alan will probably tell you not to get one with all the mess he has been through. I will say the best kits manufactured state side I think are RCC. Very high quality kit and he can recommend a tuner to you. Stay in the 6-7lb range on a stock motor and no topend WOT
Dont' get a Hahn kit. Anything, but a Hahn kit. Stay away from a Hahn kit.The extra $700 is worth it for a Rcc or Velocity kit. Hahns short cuts and cheap header will get you in the long run. A stage 1 stock motor busa just ran an 8.20 @ 180 on psychobike, but I don't think it is a daily driven street bike. I race and street ride alot so a spacer plate and valve springs seemed like a safe upgrade.