Hello, I got the sound insulation from a 90 dodge caravan that was under
the rear carpet and put it under the floor boards.One thing an american car
can do is to drive quiet.This is a good and tight fit. $5.It is the
standard felt like material with a asphalt like backing that is found in
most cars, only this is in a nice sized flat sheet.I ran it the entire way
from the front seats , back, and up the engine compartment slope.