Sadly I can not hook you up with the new map. Hopefully someone here can.
For this section of your message: the answer is, yes. You're able to replace the radio unit with an Apple Carplay unit. However you'd need to find someone who is strongly capable of doing so. I assume that you also have functional buttons on your steering wheel? If so, the steering wheel has to be functional/compatible with your Carplay. If not, your whole system will bug out (example: if button X is pressed function Y will take action instead of function X.) including the camera setup. But I understand that you rather have Apple Carplay (with maps & such) instead of having the normal unit.
If you have any questions, feel free to ask.
