1. Remove the rear seat side bolsters by using a 10mm ratchet on the bolt holding it to the trunk behind the seats then give them a tug to release them. Put aside.
2. Remove the 3 screws from the lower C pillar trim. Put aside.
3. Pop out the "SRS Airbag" badge with a small screwdriver carefully and remove the screw underneath.
4. The Upper C Pillar trim is held in via 3 or 4 trim clips to the sheet metal. The trim clips are strong. Take a look in there with a flash light and you will spot them. I wedge my hand in there near the clips and pop them out one by one. Be careful not to scuff your headliner like I did.
The rear deck is held in with 2 plastic trim pushpins. It will slide out with the seatbelts still fed through. Use a ratchet with a phillips bit to remove the speakers so that you don't scratch your tint (like I did and cursed) or worse, break the rear window.
Once you've done it, its easy as cake to put back together. I recommend doing all sound deadening and carpeting/weatherstripping just in case you plan on adding a subwoofer later on. I also used Silicon around the LED circuit board in the third brakelight because it is not mounted solidly.