Nothing major that I know of. My setup is a 41.5 mikuni, 9" cone k&n filter, vforce v2 reeds, aggressive drag/trail mix port job bored to a 87.5 mm .40 over I believe and a Q v1 pipe. So unless he's only got a 250 chassis with some other power plant I should be just fine oh and he's got about 100lbs on me give or take.