I would suggest to anyone to get the Cantrell Air Induction System or the Dali Big Gulp and just keep the stock air box. Replace the stock filter element with something like Comptech Unifilter and you are good to go.
When I removed the stock intake pipe from inside my fender well, I was shocked to see where the opening was to the intake. It was actually positioned above the opening of the scoop so when air enters the side scoop, it is bounced around inside the wheelwell and finally it makes it way to that small opening.
Now with the Cantrell Air Induction System, all the air the enters the side vent is funneled directly into the stock air box and throttle response is much better as well as top end power. The sound is much more agressive than stock and when you turn off the engine, you also hear this swishing sound that lasts about 5 seconds.