he's right, I've used Dynamat multiple times but RAAMAT kills it in my opinion... excellent sound deadening and unreal adhesion, awesome customer support, and a great price to boot. Looks like his next generation stuff is on sale now too. I did the inner and outer door panels alone on my 80 series and it made a dramatic difference in blocking out road noise. 2 years inside the doors and it's sticking like no tomorrow, you will not get this stuff off. I would be amazed to see what doing all the doors and the floor would be like! One note though, this stuff is heavy.