another vote for the Werks B5! pair it with a 2035,2013or even a 2057 and you will be set!! YOU CAN RUN OTHER PIPES, but these have been proven the best set up for the motor!! you will have guys with o.s speeds and ninja's scratching their heads why they spend so much money only to be pulled by a $200 buget motor!!! and like always Werks customer service is TOP NOTCH, cant get any better!!!