Do yourself a favor and put some dynomat (or some version of it) on the floor when you're done welding. I recently added some extra jute type insulation on the front floor pans to help keep the heat down from the headers. It make a huge improvement. The console used to get so hot I couldn't lean my leg on it. It stays nice and cool now.
Yup, definitely. I tossed that silver stuff in last year when I was coating the floors and putting new carpet in. Had it laying around. Pita to get out but I'm gonna put killmat or dynamat back in place.