I thought I would share my Saturday project with everyone. I wanted to eliminate some of the cab noise and improve on the crappy sound of my stereo. Spur of the moment so I didn't have time to order Dynamat or Fat Mat. I choose to use Frost King Duct Insulation from Home Depot. Its 12" wide and 1/8" thick and comes in a 15' roll, and is self adhesive. Three roles, new utility knife, and a roll of aluminum tape for a total cost of $72 bucks (another $75 bucks to replace the screen on my iPhone I dropped and cracked taking the pictures!). Added all new wiring to the stereo and installed a Rockford Fosgate 4 channel amp. I was very pleased to see that I had zero rust on the floor. Be prepared to have some painful cuts from the insulation or wear gloves (I'm not smart enough to wear them). My grandson like it