I have on 04 Busa. It has bazzaz fuel controller, pair valves removed, air box mod with K&N. I just ordered a BMC will see how that goes. Lowered and stretched 6". Has Brock Sidewinder exhaust also. I was thinking about installing the Brock's clutch mod and change my stock gears to 16/42. I wanted to know will it take alot off my top end because I ride to Memphis quite often. I'VE BEEN killing stock busas with pipes and power commanders. will this help me beat them even worse or will it hurt me? Let me know and tell me what are the best sprockets to buy