Ok, I did manage to get that back panel off and the styrofoam came right out.

So I installed some of my dynamat extreme today. Took quite some time! I only installed the floor of the trunk and it took me a few hours total. I was surpised, but you really gotta work that stuff into all the bends and contours of the metal. I didn't have the roller tool, just used a glove and a little elbow grease. lol. I only used 3 sheets out of 9 so far in the bulk pack so that wasn't too bad. After the trunk floor what would you guys recommend me doing? Should I go ahead and do the back panel? Or where the gas tank is? Both? Or should I focus on the rear wheel wells? I am going to use all of what I have. It weighed in at 22.4 pounds which I thought wasn't too bad considering the resonator probably weighed that much.
BTW - I BETTER be able to tell a difference with this shyt in there!! If I don't, I am going to be mighty pissed!! Fingers crossed.