yeah thats what I found on the old 5.0 I had, I used a crap load of dynamat on the floor/hatch and I really couldnt tell. I did not do the doors however and I hear that they make a difference. Either way I was thinking about the undercoating because it looks clean (when done right) and if it makes it quieter then thats even better. For the record, riding with a woman in a loud car is even more annoying than the road noise..."Why is it so loud in here? Is it supposed to sound like that?"...shut up woman lol.