I own a 1990 GT that has not only been a 3 year project but a money pit........like every other persons on here isnt.. Anyway I have to pull my carpet again and am going to replace it with new this time. I want to add some sounf and heat insulating mat to the floor and trans tunnel, trunk, rear quarter sides and the roof. Which brand is best, and whats the best deal? Ive found this link and it looks pretty good... http://cgi.ebay.com/ebaymotors/ws/e...m=120265103378&ssPageName=STRK:MEWA:IT&ih=002 .. Also how much do I need to do the areas I want.? The company in the link says 100 sqft will do most any midsize car, but Im prolly not doing doors. Any particular areas to focus on or not to forget? I currently have 2 - 12's in the back and they sound great but want to make them sound better and stop hatch and roof rattle. I also have no AC so I want to cut down on floor and other radiant heat.....ALL OF YOUR INPUT IS WELCOME..Also do I have to buy this online? I will NOT buy from Best Buy that **** is wayyy to expensive there. Thx