Since this is to be a fun cruising car, I wanted to add soundproofing and that is why I added all the Dynamat/Eastwood type material to the floor and firewall. After reading several technical articles on soundproofing, I decided to add a layer of 1/4" closed cell foam on top of the adhesive mat. After I get it on the road, I'll see if it worked as specified.
Got it from an aircraft supply company where it is used to soundproof cockpits. http://www.aircraft-spruce.ca/catalog/appages/supersoundproofsheet.php
Got it from an aircraft supply company where it is used to soundproof cockpits. http://www.aircraft-spruce.ca/catalog/appages/supersoundproofsheet.php