[mcrews]

So that I am clear.
I dont believe there is 40lbs of deadening material to be found in the avg english car.
But if there were, AND you completely dismantled the interior to find it, why would you not put the (light weight) insolation INSIDE where it would work w/ 100% effecientcy (what ever that is).
If you don't put it inside then ANY inside noise (like the radio????) will sound like crap.
Remembering thwe the new material has a weight that you have to ADD to the UPTO 40lbs. THen when that material on the OUTSIDE gets wet, it gets heavier. ANd wont dry out in the closed environment of the underbelly pan. So the new weight stays.