I have the NeedsWings CAI on my car. I'd highly recommend it!
There's a definite HP increase (dyno proven), the look is better than that giant piece of plastic IMO, and the sound when you snap the throttle open is awesome.
The single K&N cone filter flows more than enough air for the NA engine, it's the same one they use on the supercharged version. It's located right behind the grill for true cold air. All piping is 6061 aluminum. Very clean and professional looking.
www.NeedsWings.com
Go to the SRT6 section of his webpage......it'll be about halfway down the section.