These are the best bang for the buck from what I have read and you don’t need to mod anything but remove the front bumper.
http://www.autoanything.com/air-inta...3-001b2166c2c0
The only thing is that im not sure if they are carb legal. Per the description it does not state. A couple hp less for a 100$ less. Personally if not carb legal. Stick with Stillen.