to beat a dead horse, a K&N won't do much if it's a 'drop-in' replacement. if your looking for more power, then look to custom fabricating a new airbox. when doing so, consider the following:
air temperature
source location
volume
velocity
heat soak
turbulance
don't even bother with any of it unless your very knowledgable about these aspects. until then, just wait until i have the money to finish my induction system and make a few extras for other members. i promise quality, longevity, and performance gains. i already have it on paper, but turning that into a physical object takes money. lots of money passes through my hands, but it's all to other people's benefit.