I was wondering what did you guys do to eliminate the rattle? I know damplifying it will help but what about the trunk lid?

 

A dynamat type product is the way to go. Don't forget to do the latch, block the vent in the bumper(it's behind the rear interior trunk panel), and do the deck lid.

If you plan on really getting the trunk to sound good plan on buying a good amount of mat. Then do the whole floor the inter fender walls, the deck lid, the latch, vent, and don't forget the tray... there are a couple of ways to do that.

 

It's not uncommon for the spare tyre nut to come loose and rattle. I'd suggest you check it first. Your issue may indeed be the trunk, but checking the spare tyre nut is a potentially cheap/easy solution.

 

oh and I forgot the license plate... put a sheet across the back.

 

its the bumper and trunk rattling. I just ordered 40 SQ FT to do the trunk. Hopefully that'll be enough.