Have a 2012 3.6. I'm looking to get some more sound from the engine when on the throttle. Just a nice punch but nothing too loud. Don't want any drone or too spend a lot of money. What do you think would be a better buy? A CAI from K&N or maybe the Gibson axle back exhaust? I realize they won't really change performance, but I just want some more sound and maybe a little more throttle response.