[whirnot]

I have not used Dynamat, but have used Fatmat, and Killmat, in one car, two pickups, and a motor home. The killmat was 50 mil, the fat mat 60 mil. They make a big difference. I think I actually prefer killmat. Even though it is thinner, it works well and comes in 10x16 sheets instead of a roll. It seems to be the stickiest as well. I used deadener in the complete floor pan of my roadster, including on top of the floor boards.