Kool,
I dont know much about lowering your Busa, but a good exhaust system is HMF dual carbon high mounts. You'll need a PC2 to remap. The Motorhead has a great map for the system with a full airbox mod. This exhaust is going to give the best hp increase. I have a full Muzzy carbon system with the PC2. I'm happy with it, but if I would have known about the HMF before I bought my Muzzy system, I would have gone with HMF hands down. Not to mention the high mounts look frickin awsome. They have a web sit, I think its "www.hmf.com", but I'm not sure. It costs a little more than $900, but on "www.suzukihayabusa.org", there was a couple guys selling their system. You could probably get a good deal from them. By the way, there is a company called Schlitz or Schintz Racing, or something like that,that sell braces/brackets/straps for lowering your Busa, but like I said I don't know how they work. Good luck and be safe.