The 2004 Ford F-350 that I custom ordered came without the overhead console display unit, so I sourced one from the same model year Excursion. Seems Ford, and likely GM, used one wiring harness for the overhead consoles, no matter which options you have. My particular model, with cloth seats I wanted, didn't offer the overhead console with fuel mileage display, compass, and so forth, just the map lights and control for the sun roof I ordered. It took me some months, but I finally found one with all the bells and whistles in the gray color I needed to match, and in the short version for the sun roof. Completely plug and play, with one exception. I haven't found the outside air temperature sensor so far, so that function doesn't work. I'm pretty sure that the wiring is there, just need the sensor.
It seems to me that your issue is one of too great a time span between the vehicle you have and the tech you want to add. I do look longingly at that blank space usually used for the rear AC controls in Suburbans, but not for an electronic display. I plan to keep on looking, though.