You only need a 145 if stock, if not then you wont, 147.5 150 152.5 155. See what you have in there now
I have a K&N and that's about it... is there only a main jet and the rest are adjustable? I will probably wait to jet after a do the exhaust in a week or two so I will then have K&N and a FULL exhaust(not slipon) but in the next day or two I am going to strip and clean carb so will have a better understanding I hope