Don't Mind him, he just talks
K&N is a fine ram air intake. As mentioned, the Bwoody is a great intake and pretty much the same price as the K&N intake.
Bwoody grabs air from the passenger side wheel well. It also uses a K&N filter.
Other than a difference in sound, the jeep flows plenty of air stock. And eventually the ECU will learn and it wont increase your performance all that much.
But as far as sites go, check ebay if you are dead set on the K&N... However, I would go with the Bwoody as its about the same price, and you can get just about any color you want.