I just bought a '76 2.0 that does not appear to have any of the original sound-deadening material and it certainly does not have the floorboard tar, as I discovered when I checked underneath the carpet for rust. The road noise in my car is not bad at all, of course I can't compare it to a car with the tar in it, but I don't think that my car without the tar is much worse (or any worse) than my daily driver (a 1988 Accord).
|