They sell them, not a Ford unit but i've seen them in parts catalogs. Might try Summit... it would just need to be wired to a power source and since you have a vert you already have it run up there for the lights.
Look into a Cipa model 36500, it has compass, temp (uses one sensor you mount in your front bumper) and most important for us vert guys has the map lights on the mirror
You can find them on Amazon, autoanything and ebay
I don't really like those self-dimming ones. Hell, I never drive @ night, so it would be just wasted $. I just want just the thermometer on it. Don't even need a compass. I never drive anywhere that I am not familiar with.