GoFish
Have impressive member
I found that sound deadener website a couple of years ago, and based on that, I went with Second Skin Damplifier. I thought it was the best balance of effectiveness and price. I used two layers on floor and firewall, and one layer on inside of door skins (a ***** to do), trunk, wheelwells, roof, etc.
Here's a pic of the inside of Turbo Scamp:
Here's a pic of the inside of Turbo Scamp: