Ok heres the deal. My buddie and I both have 01 shee's. ok we drag raced today on pavement. he won every time. He's mods are as Follows: stock air box with Uni filter, stock Reeds and all, 230 main jets and Rocketpipes. stock gearing. My mods are as Follows: Airbox Removed toomey 2into1 airfilter,Boyensen dual stage Reeds, 290 Mains,Rocketpipes,Stock Gearing, We both got real good takeoffs I almost flipped mine over a couple of times. even when i got a better start and about 4 lengths on him he would catchup and pass me. I think were at around 700 feet above sealevel. im not sure if I need to up my mains or drop them.Hell mine might need a top end rebuild im not sure. it pulls Hard can't keep the front end down. :shrug: