What cars came with hood insulation if any? Wouldnt imagine there being much surface area with an Air Grabber, obviously none on the A12s, but would think there would have been some on a "plain" hood? Then i guess my next question is there any benifiet, I would rather get head out of the engine compartment but would think that would keep it in. My hood does bounce a lot in the center, and was thinking it might dampen some of that.....