Stop by the dealer parts window, request the schematic AND wiring diagram for the ambient air temp sensor, and check it out.
Request the “initialization” protocol used to prep the new cars of that model with the desired displays while you’re there. You might get lucky. I’d bet lunch that the BCM (Body Control Module) is capable, and that the wiring is in the harness. You might get lucky and just need a sensor and a bit of reprogramming. The display might also be capable.