^^ agreed with randelator 1 thing tho, if you get ur engine built up in the future, there is a company that makes "More Speed Sprockets" they have a red chain, can't miss them, they are pretty hard to break, ive tried a few times (course not on purpose) anyway... yeah, they make them in 14/40 and 14/39 14/39 gives you more topend speed 14/40 gives you more bottom - mid power (quicker off the line) but do 14/42 for now since ur not built up very much