Before we started building anything, we ran 4 gauge Street Wires Power Wire from the battery to the trunk, where it is split into 8 gauge for the amps and caps. The power runs through a 150 amp circuit breaker. We then proceeded to dampen everything that rattled, including the entire trunk, trunk lid, rear deck, parts of the roof and cabin, and all four doors, using Dynamat Extreeme and Classic. It was sufficient enough to kill the rattle monster.
Above you can see my source unit, the Alpine CVA-1005. Its an in dash motorized TV. It plays CDs via a disk changer in the trunk, and is hooked up to my Sony Playstation 2. The unit is controlled by a brain unit hidden in the trunk. The signal passes from the brain, into the AudioControl EQX. This unit has an equalizer for me to fine tune the sound with, and a 24Db/Octave crossover to split the signal to my two amps, one Mid/High frequency, one low frequency (split at about 80Hz, with the 24db roll off).
Here you can see the Rockford Fosgate Amplifiers. To the left is a BD1000a1. To the right is a 600a4. The BD1000a1 drives my two Boston Acoustics 12" Pro Series Subwoofers with 500 watts each. The 600a4 is bridged to 150x2 , and runs my front speakers, which are Boston Acoustics Pro Series 6.5" component speakers (in the stock location, so no photo of those, just a door pannel and tweeter pod in the A-pillar). Between the amps are 2 MA Audio 1 Farad Capacitors. Above the sub box, you can see my Alpine 12 Disc CD Changer.
Here is the back of the sub enclosure. It was originally done with 3/4" plexi as the back, but the subs generated so much pressure that it flexed the plexi and blew it off the back of the box! So now I'm using 1/2" high density plexi, and the troubles are over.
The mirror on the bottom of the box was custom made at a shop near my home. It was cut to fit the bottom of the box, and etched with the boston acoustics logo (you can't see the "acoustics" at the bottom of the mirror in this picture). The interior of the box as well as the amp rack was done in white/blue cracking paint for a nice effect.
The entire trunk setup is accented by blue neons, which makes everything glow at night very nicely (I'll try and get some nightime pics soon).