I did the whole floor in my Demon a year ago, made a big diference in the heat coming into the car, Not a very big dif in noise, still quieter though. I got it at Lowes they have two sizes get the bigger with the foil tape that recomended, it was around $45. You can hold a lighter to it and its very hard to get it to lite. BTW remember to add whatever you use to the package tray area and behind the rear seat, this to me is where a lot of the noise and heat comes from.