Most screens you see pull out and flip up anyways. Are you wondering if it was 7" deep? If not, you can modify the passage to the AC vents to make almost anything fit.
Nah, was wondering if I could mount a screen inside the dash. The screen it self is like an inch thick. But the size of the screen is 7". That's why I was asking for measurements so I could see what kind of size would fit best.