Fiberglass 6 pack hood get the heat out?

The scooped hood, tunnel ram hole, etc will vent heat, when idling and when it is shut off. That's about it. It will bring cooler air into the engine compartment, what happens with it from there is a different story. You can watch the heat radiate out of the dual snorkel scoop I had, then the tunnel ram hole. I believe it helped in traffic, heat rises, then escapes the opening until there is an in-rush of air. A rear facing scoop, like GM cowl induction, brings air in from the base of the windshield. This would vent heat out as well at idle or when off but has no real place on a Mopar in my opinion.