Product Description DMT This is our NEW, correct shape, correct fit A/C firewall insulation / sound deadener for 70-74 E bodies; AAR, Barracuda, Challenger, T/A. We improved the correctness in both shape and materials. Pictures show roughly the correct orientaion in the car. Under our technical page we are adding pictures of the insulation in the car (usually before removal or restoration). Note: We also have a listing for the NON AC version MaterialsHeavy black cardboard with 1" yellow fiberglass insulationComes with our own OE correct plastic pins / nails that are firm but still flexible. ShippingPriority Mail or UPS. We combine shipping.