I just pulled up the part # on the carbs and also called doug at d&m. The carbs are 39mm pwk's that he bored out to a 40.5 mm and like I said they come with billet oversize bowls, billet 1 piece intakes, power jets, k&n filters and prefilters and cable w/ twist throttle. Sorry for the confusion but it is hard to get ahold of doug @ d&m