SO you are sure there's no difference between them?? I find that very hard to believe..but I guess it is..I recently dynamated the rear doors on the back of the outside panels and put acoustical foam between the door panel and the inner sheet metal.. I guess that made things worse not better..As for the whole inside the door, well front doors have that too but still sound acceptable!! I guess the foam is the bad part what I sold have used there to support the panel should have been some sort of spacer instead.
