Search is your friend man.

No in dash screen will work.... I believe not even the kenwood, as the gearknob will inevitably get in the way anyway.

There is always the JVC single din headunit with built-in dvd screen as an option, but it requires the radio door to be constantly down whilst viewing a movie on a 2" screen.

The only other alternative is a JDM dash bezel and cut a hole in your dash and mount a TV screen in your dash. Has been done in Oz here atleast 4 times I know of now. Always another option to consider if you like the idea of hacking your dash up to fit a 6" screen.

Hope this helps.