By the looks of the snorkel, the route the air takes in the intake box and the restrictions of the intake pipe that the EVO setup would allow air to flow more freely. HP gains? I'm sure their nominal. If we had some sort of forced induction I'm sure the upgrade would make a huge difference. But being normally aspirated you would think the numbers do grow in the higher RPM range, but not by much.
Wingnut2u, if you don't want your new intake setup I'm willing to run back down to Dallas and make you an offer just like the other stuff I bought.
P.S. As you can see the painted bumperetts aren't on in this pic.