The Volant is the *only* CAI available for your model. I have it and I like the way it looks and sounds (fairly loud). I have realized about a 1 mpg improvement in economy and I'm estimating 5-10 whp. I plan on proving the power gains within a week or two. By the way, Welcome!!Tracer said:My wife just bought a 2006 Sports Edition 4X4 w/ V8. We have the Borla cat back and after reading alot about cai, is the volant cai the best? Also, which HID kit 5000K or above is personally recommended?