I have an '01 R converted to SM, with ProCircuit T4, Quicksilver pumper and Uni. I also just completed mods to the left side panel, adding the screened vents. For street use is it worth me investing the 60 bucks necessary for a K&N? Seems the K&N would flow more air than the current Uni, but I am not sure. Thoughts? Thanks! Ride safe.