Hi - I have a 2012 Optima with navigation and infinity and stumbled on a pair of posts you made claiming that swapping out the head unit can be done by popping in a non-infinity HVAC control panel. I've gotta be honest, I've been searching for a solution to this problem for AGES, and you're the first person claiming this can be done. You've done this? It works? Sorry to doubt, but i'd pretty much given up hope on ever swapping out the head unit on this car. Hoping this is real!