Aerodynamically the Wrangler is not really a good candidate for hood scoops. The air hits the grill and then there's a low pressure zone above the hood towards the front. Then the rear is a high pressure zone as it bounces off the window.
Personally I DON'T believe getting cold air into the engine bay through the hood is a great idea. If you increase the air flow into the engine bay, you increase the engine bay's air pressure. If you do that, you make the radiator less effective.
Remember your engine is designed to be water cooled, not air cooled
Ideally you want to get the hot air out of there and encourage more air to flow through the radiator. The hood vents when positioned properly achieve this.
If you want a SCOOP, then IMO it's not FUNCTIONAL unless it's sealed directly into your air intake. The cold air is really useless anywhere else.
The AEV hood in my opinion is the best approach to a functional replacement hood if you want additional cooling. I'll be adding an ARB Safari Snorkel to scoop in colder air from outside the engine bay and have the benefits of a less dusty intake and "cheap insurance" if I'm caught in a flood.
Click here for more info on the AEV Hood.
Plus it looks AWESOME. It's got the functional performance look along with a touch of elegance. The twin powerbulges give it a sort of Mercedes AMG feel. The HID's and high tech rear view mirror compliment that
Now I just want AMG-like engine performance
BTW... add the HoodLift kit from Quadratec while you're at it... no longer burn your fingers when you lift the hood up after the engine has been running.
More info on that here...