Crutchfield Customer Review (What's this?)
This stuff is great! Very easy to install, I put it on in my drive-way in about an hour. The door panels pushed right through the mat and made for a nice tight fit. Not only does it help your stereo sound better it also makes the ride more comfortable by blocking out road noise. So it would even help a stock system. This step is often overlooked by the amateurs. This stuff is what separates the true "Music" fans from the annoying tin can rattlers that we all have experienced at the local parking lots.