I must disagree on Fatmat and edead v3 at least.. I used them in my beater car in the trunk, doors, floor and all and it worked VERY VERY WELL. I live in florida and the car stays out side, and the fatmat has NEVER came off not even on the trunk lid, sides of trunk, doors..
It's worked very very well and my trunk does not rattle at all. I used the edead v3 in places I did not want to use the fatmat and never went back over the fatmat with the edead and it still sounds great..
Just my two cents on it. If I listed to everyone here I would of spent 2x as much and got about the same affect..
Remember this is a better car a 96 thunderbird with a sundown 3000D and a nightshade 15", 2 large batterys it's at least a 145.00 I will have it metered soon but I know it's louder then my 2005 chevy 2500HD with the same setup and better deadner but then again it's a totally different car.
If fatmat does not fall off in FL+OUT SIDE 24/7+less rattles+cheaper= GOOD SHIT.. Not the best but good for the price.