Just got a blaster and the engine was seized. When looking for parts for it found a big bore kit on ebay with a 68mm piston new sleeve crank seals head . I was wondering if anyone could point me in the right direction for what size jets I should use I live in denver I know altitude plays a part in jetting I will be useing a pod air filter but for the time being I believe I have the stock expansion chamber any help would be greatly appreciated thanks