I have only done this once, on an MGA and the carpeting was very thick. I used the dyna mat under and had plenty of feel to the carpet. I wanted to get some thoughts from those who have used the ACC carpet. I got a couple samples in 515 and 615, one larger loop and a bit thicker. Comments on the use of these types appreciated. My old roadkill has very heavy OEM pad with two layers of carpet now. I would like a bit of padded feel, and am thinking that it might be good to use both the thermal and sound deadening dynamat stick on, AND some more padding in places to get a good feel. Anyone have experience maybe with just the tar and alum dyna mat with these carpets......I suspect a bit too thin. thanks