Having had the dynamat extreme installed in my car recently (only the front doors), i can say its definately worth it..the difference between non-sound deadened and deadened is just amazing...when you've done a door make sure u do the "tap test" on another door and compare it to how ur sound deadened door sounds when u tap it, you'll notice the difference im talking about straight away, and just wait till you hear the difference in the way your music or w/e u else you wanna play sounds....trust me you wont be dissapointed
