[cameron02]

I'm carpeting mine at the moment too. I'm using a sound/heat deading underlay in on the trans tunnel (my exhaust goes through the tunnel). Basically its two layers of felt with a layer of bitumen in the middle. Then on the floor I'm just using normal felt underlay.

Cant tell you if it works well or not yet as I have not finished. Also consider getting your exhaust HPC coated if its heat your worried about. I can say that it seems to work really well.