HEY DUDE, I WOULD GET A TIMING PLATE,COOL HEAD WITH SOME 20CC DOMES,ROCKET,OR CPI PIPES,V-FORCE INTAKES,AND A TRIAL PORT FROM F.A.S.T. RACING AND YOU WILL HAVE YOUR HANDS FULL.MY BIKE HAS ALL THIS WITH ROCKET PIPES AND STOCK CARBS JETTED FOR ROCKETS, AND I RUN A 5.39 IN 330FT ON DIRT.