I'm gonna buy me a new carb but I can't deside witch one to go with ? I'm looking at Either a Mikuni 34mm or a keighn 34mm . The Mikuni is a whole lot cheaper but also heard better things about the keighn 34mm . I was going to get a port and polish job and a 3mm stroker kit , just tryin to get me the right carb for the set up ?