I insulated my rear trunk compartment yesterday. I used www.raamaudio.com
products which are about half the price of the popular brand name product. The new Camaro has little or no unibody insulation. My local audio shop insulated the entire trunk area including the floor, wheelhousings, 1/4 panels, etc from the rear seat back rearward.
Both products took about 4 hours from start to finish. total weight 24 lbs. Next I'll do the rear seat area. You would not believe the difference this makes in eliminating road noise and giving the Camaro a more solid feel.
The total cost so far $150.00 materials including shipping and $160.00 labor.
Sorry: I'm getting an "error" when attaching additional photos.