A friend of mine who owns 3 old Chargers turrned me on to this stuff. I am sure everyone knows that "Dynamat" is for sound proofing. Can be very expensive stuff. This stuff called e Dead 80 is the same butlyl material but thicker and costs a lot less. The website is below. looks like $2.00 a square foot but It doesn't say square footage on the site. He has used this in all of his restorations and says it's great stuff.

http://www.edesignaudio.com/product_i...