If nothing else you can try it out and if you dont like it you could it back together and it may actually be more quiet with all that liner on there. I did that to a honda I had, mostly since I had a system in it, to keep rattling down.
Yeah, I am thinking about taking it apart just to see what's under there. I just don't want to destroy the trim in the process. I need to get some of those plastic trim tools the audio shops use to pry stuff.