if your not running a bigbore kit i wouldnt run that big of a carb.. maybe a 30mm would be fine for basic mods .. what kinda mods you have done to your motor ?..
i know there are a few people on the forum running 250r carbs on their blasters. but like ron says, unless your ported or running a big bore it's a little overkill.
yeah, all i have is vitos high comp piston kit, fmf pipe,uni filter... i want to get flotek to port it but he dont like to answer my pms, i might ask kennedy power instead