.. there is some sort of spray deadner available, i've heard probably at any large parts house. it doesn't expane that much.
or
buy a sheet in dynamat..., the kits are way more expensive, go for the roll. boy the stuff ain't cheap but you don't necessarly have to cover the entire interior panel, roof, doors, back panels, under floor. cut w/ sissors, peel off the backing, stick it on. done!
