So I in the process of building a new car pc for the honda It will be similar to my last build, but a few better parts.
The specs of this build:
Motheboard : Zotac 9300 1333 FSB Geforce 9300 onboard video, up to 8 GB DDR2 800 ram 12 USB ports. onbaord WIFI, and SATA
CPU: Intel Core 2 Duo 3.16 GHZ
RAM: 4 GB DDR2 800
Soon to come a Western Digital 1TB HDD, a new power supply and some other stuff.
On to the pics
All the stuff so far
Mobo out of the box
RAM installed
CPU install
Put the whole thing on the case bottom its going in which is a gutted cd changer to keep the stock look in the trunk
working on attaching a fan to the northbridge/graphics chip as it gets really hot without one, might have enough room for two as i dont want it to burn up
CD changer top on still need to install the hard drive and power supply once i get them but this is what it will look like

One intake fan near the processor and an exhaust fan on the other side
YAY it turns on
should give you an idea how its built