I just ordered some of the Fatmat Rattletrap sound deadener for the trunk. Here are the specs.... Tremendous Bass Gains 80 Mil Thick 1 Mil PSA(Pressure Sensitive Adhesive) Gain Unbelievable Sound Quality Stop Rattles, Vibration & Noise Control Reduce Distortion Massive DB Gains Practically eliminate Road Noise, Loud Exhaust and Engine Noise Odorless (Has No Odor-Leaves No Odor) Easy Installation (everything needed is supplied) Great For Firewalls, Floors, Doors, Trunks, Side Panels