The in-dash cutom install:  Hidden behind the trim pieces are the GPS, USB Soundcard, Power Supply and my custom harness.  All parts are cut into the car's wiring harness with connectors, to allow the system to be removed and the vehicle placed back to factory.  Note the power panel below the stereo.
 

Left: LCD in dashboard

Right: LCD Extended

The PC is placed above the glovebox, below the airbag.  The mount allows the DVD drive to be mounted below it, and allows the glovebox to be fully functional.  When closed, there's no telling the PC is there.  I modified the glovebox by removing the plastic top, and cutting the rear of the box to accomodate the DVD drive.  Reverting back to stock is not completely possible, but should be relatively easy.
 

Left: Glovebox Open, glovebox is fully functional/useable

Right: PC/Drive just under Airbag, trim in rear of Glovebox

The Amplifier and subwoofer are in the rear of the vehicle.  The wires are run in the carpets and body panels.  All of the speakers attach from here to the stock location under the dash.  The DSP, located under the driver's seat, is wired to the amp as well.  With the AMP mounted on the back of the rear seat, and the subwoofer loose, it is possible to still use the vehicle for hauling items.
 

Left: Amplifier and Sub Woofer

Right: DSP mounted under driver's seat

The power panel allows the PC to be started, turned off, and reset.  The USB connection brings the hidden spare port to greater accessibility.  The IR window allows the remote control to work, and the alternative power port allows the entire system to be powered by an external power adapter.  On the rear of the wiring board is the connector to my custom harnessing.
 

Left: Power controls, USB, Alternative Power, IR Receiver

Right: Rear of power controlst