[DanEC]

Like Bob said - Frost King insulation from Lowes is the easiest, effective route to take. The stuff is close to, or the same as ERA uses on the outside of the footboxes. I'm going a little different route and bought some B-quiet dampener material and some EZ Cool insulation blanket to go under the carpets. It will be a little thicker overall but I have undercar exhaust to deal with. For a sidepipe car I would have gone with the Frost King. I used it to extend the ERA footbox insulation to the underside of the boxes.