I have a Custom made speaker box, that I made. It fits so snugly in your trunk that it does not rattle at all. I have it currently installed in my 1993 firebird. It comes with 2 x 12" MTX blue thunder subs that beat like crazy. I also have an awesome Fosgate amp (I forgot the wattage). I was just posting here to see what types of offers I could get. The sub box is not carpeted, but you cannot see it when the trunk lid is down. It is made of 3/4" MDF. It is sealed great. There is a silicone sealer throughout the case to prevent all leaks. I will get some pics soon. Email Black1993Formula@hotmail.com to see them.