I've been doing a ton of research on the subject and I'm pretty much 100% set in wanting to put a mikuin hsr42 on my blast. The only question I have is do you think the bike will run ok with just a exhaust and open intake? I ask Bcs it will be awhile tell I have the funds to port/polish the head, stronger valve springs, cams and ultima ignition. I like the mikuin carb Bcs the easy of tuning, quicker throttle response and smoothe running. I don't want to throw money at the stock carb if I'm just going to get rid of it anyways.