Found the K&N CAI for 199.95 on Ebay and the Lingenfelter for 209.95 both with free shipping. I've installed the K&N on a couple different Mustangs and my Truck - easy to do and good fit. Anyone have any experience with the Lingenfelter CAI? Also, I saw a metal Lingenfelter CAI on a car but I cannot find it anywhere - not even at the Lingenfelter website. Anyone know where I can find one or what they cost? Both kits claim 12-13 hp increase. Any info is appreciated.