Copied and pasted from one of my former threads.   You 'speed-nuts' would probably kill me for this...this sound deadener added about 100 lbs to the car. However, being that I stripped away all of the rubberized coating on the exterior floorboards and chipped away the interior sound deadener prior to paint, I wanted to do something to quiet down the cabin on this car. There is more to a car than acceleration, braking, and handling. It has to be enjoyable to drive all-in-all.