The only problem with that setup is it won't flow enough to maximize a 3.4 pulley or smaller. After your panel has had some time to get dirty, take a look at how much of it is clean. The area behind the filter blocks more than half of it. I tried to get the stock airbox to work with a panel, but it's a lost cause. Soon as I switched to a cone set-up, I was able to get into the 13's. FWI is really the way to go, not only does it grab cooler air from the fender, but the stock airbox soaks up a lot of heat and tranfers it to the incoming air. The denser, cooler, and larger volume of air you get from a FWI nets you more power and less KR.