i just went back to race gas on my atc 500. but it's possible that you will need a fuel pump. an alky carb i would suggest lectron because once you get it to idle and hit the throttle and it still take the fuel without wanting to shut off it's time to turn the metering rod. { right=rich/left=lean}. after the metering rod is almost correct you move to the power jet.{topend} your motor will run alot cooler and performance will increase. the only main problem is if your getting ready to drag keep blimpping the throttle to keep the fuel from building up in the cylinder because you will burn twice as much alky than gas. last but not least remember to purge the system after using alky. it will rust up on you...i went back to gas because where i get my alky from he's thinking about stop selling it.