AEM does not make a CAI for 2000+ models (or any P11 for that matter)
Brand name does not matter either, any brand will produce around the same HP. The gains in CAI's are mainly due to the length of the tube and the air picking up speed as it funnels in. The cold air helps but not as much as the length of the tube.
I think when they first developed the idea they mis-named it because they were under the wrong impression. They should've been called: "Long air intakes"