[71 super]

I used dyna mat in my bb truck and just cut into small squares and placed it in hollow places- doors, rear of cab, around rear light etc. I just installed fatmat in the same fashion in my 4x4 yesterday and could tell an immediate difference just tapping on the various sheet metal sections. I can only imagine what an entire cab would be like with this stuff. It sounds very solid and not "tinny" with just what I did . Get the fat mat off ebay you can get it cheaper there if you shop.