[TeeJayHoward]

My horse-hair whatever that's protecting my poor, sensitive ears from the clanking and clanging happening behind me on a drive is... Well, old. It's in pretty good shape, and I guess it does it's job, but I need to track down a leak and I've a feeling that I'm going to end up removing the cigar-smoke-infused old stuff in the process. Before I do, I need to make sure I've got a replacement laying around, ready for the install.

Are modern sound deadening materials any upgrade for the old stuff, or has the field not really advanced all that far? I've got some dynamat laying around. (Sadly, no CCF or MLV, just the sticky stuff.) If I were to replace the in-cabin-firewall/deck thick mat-thing with that, would I notice an increase in volume?