:29:LOL your thread was the reason I sign up to this forum. And thankyou very much for your time and advice!I'm honored. You picked my thread to for your first post!
There are multiple threads throughout this forum in regards to using aftermarket solutions. One member put in a Carputer, another put in another system that wasn't identified. The absolute best solution in my opinion for your setup is to relocate the original orange screen and put in your aftermarket navigation system. There are people that have relocated their original screen to the roof or below the 3 air control knobs.
Whatever way you go, if you want to go aftermarket, you need to make sure you relocate your original screen to keep its functionality. Then in a separate system, wire in your aftermarket navigation system. It won't have anything to do or interfere with your OEM setup.