hi there i have a 1993 yzf 750 and the best thing u can do for performance to cash spend is weight redution if funds allow a set of carbon wheels also get the carbes balanced and check the exup valve is not sticking at any point if u havent already get stainless down pipe and that will shave abought a kilo off the stock d/pipe other posibilaties is a r1 top end or thunderace topend to give u a bigger displacement more cc = more power