Some people like to strip all the sound proofing out of their cars, but I like to add some extra. What I am looking to do is get some inexpensive sort of vibration barrier like Dynamat without spending a lot of money. I will also be using the old school absorber barrier mats made of rebonded fibers on top of it as well. I was thinking of the E-Bay special stuff like Fat Mat, but have read some bad reviews on it which state that it loses it's adhesive quality over time, and smells bad. Now I am not building a SPL car, but I do want to be able to put some sort of vibration dampener on the roof, back deck, and doors (where the 5.25 in mid woofers will be) to help the stereo and make the car a nice place to be during long road trips. Does anyone have any suggestions from personal experience? I want to make a decision in the next day or two so that I can finally put the car together next week. Any help is greatly appreciated.