That screen looks a lot like the Lilliput 629GL. But without the Lilliput badge.
http://store.mp3car.com/2008_Lillipu..._p/mon-016.htm
It is an OK screen but it may be horrible in sunlight.
You can run from car ACC line OK, it will have a voltage regulator on the cigarette 12v powercord. You can cut off the cigarette plug connector and wire direct to car voltage or OPUS power supply whatever your have.
Have a search around for Lilliput installs.
Good luck with it all