I installed an AIRAID CAI because I went to the Ford Parts web site and looked at the part numbers of the air filter, air box, intake horn, and intake hose for every Ford truck of my truck's vintage (2011). I discovered that the part numbers are all the same. Every naturally aspirated Ford truck (one or two changes for the Ecoboost models) all use the same intake parts from the smallest NA V6 to the big 6.2L V8. I figured that was probably fine for everyday driving around town at normal throttle openings, but would probably choke the 6.2L at wide open throttle when passing, hauling, towing, or blasting off road. I gained some throttle response and possibly gained minor HP at wide open throttle, but of course no difference in every day driving around town.
I've had my Raptor for nearly 73,000 miles and 6 years. I can assure you that the SVT Raptors (can't speak for the Ford Performance models after Ford stupidly disbanded SVT) were very well sorted out for their intended purpose. To make serious/dyno-measurable horsepower gains you're going to have to spend a pile of money. And if you do, be advised that your driveshaft is made out of surprisingly thin walled aluminum tubing. (hint)