Started setting up my carpc project yesterday. Used an old battery charger to power the dc-dc power supply, after trying to use an old computer's power supply, which wouldn't work for some reason. The battery charger worked great, and I was able to finish putting the system together and install the operating system and drivers for the motherboard, touch screen, wifi, and gps. Don't mind the margaritas, it was "Margarita Thursday" at my house... lol.
The plan is to finish setting up the system, then pull out the interior of the car, install sound dampening and run new speaker wire to each of the four doors from the trunk. I have Alpine Type R components for the doors, and a 12" Alpine Type R sub, with two Alpine amps, a mono for the sub, and a four channel for the speakers. I have 100sq ft of sound dampening to play with, which should be more than enough to do the trunk, doors, and floor pan. I have a zero gauge power wire to run to the trunk, where I'll have a capacitor and distribution block to power the amps and computer. The computer's power supply has an amp remote turn on lead, and I'm going to be getting an external usb sound card to use to run inputs to the amps. The touch screen will be mounted in the dash in the factory head unit location, and I'm going to relocate the DVD-R/W drive to the center console, as well as install a usb hub there for thumb drives and the like. I also have a waterproof GPS antenna, that I'm going to be install on the roof, and a usb wifi adapter that will go on the rear deck, next to the rear windshield. The computer is going to be mounted upside down attached to the bottom of the rear deck inside the trunk.