Of course though, you will not have alot of cables like me.
I think you should have the screen in dash, with maybe a few components. Then the console can hold the PSU and MoBo, then under the seat, the AMP.
Something like this: http://www.bluenook.com/product_detail.asp?pid=1635 for the adapter. I am starting to think though that the best thing to do is buy a M2-ATX and power it off the 12V rail. Only reason I say is because alot of car adapters put out 15V, which I am not sure the MoBo can handle. In my setup I plan to use two M4-ATX to power all 6 boards. Let me do more research on the MoBo and see if it is ok to take in 15V.