My opinion is that unless the intake is going into the fender than its not a CAI system. I also think the shield is probably doing minimal work. Maybe a few degrees difference. Nothing more than that. Wouldn't know where to get ones though.
And K&N filters flow so well because they don't filter much. I mean I never see a dirty K&N filter unless its an off-road vehicle. No why? Because they don't filter anything. I think that pretty much anything does better than a K&N. BBK, Airraid, heck even Spectra.