Items installed:

Head Unit - Pioneer DEH-P590IB In-Dash CD/MP3/etc. with iPod Direct Cable, Planning to get CAR2PC-PIO for best integration.
Front Speakers - Currently stock
Rear Speakers - Currently stock
Subwoofers - Infinity REF1242W 12" DVC in custom box
Amplifier - Pioneer GM-5300T 2CH 760W (190W x 2 channels @ 2ohm)

 

Pictures: