I apologize if this has been covered, I wasn't able to find anything via search function. I am purchasing a 2006 A3 tomorrow with 77k! I am beyond excited. Anyway, it has the standard radio, no touch screen

I found a totalled 2006 A3 in my city with the navi touch screen unit and I was curious if a swap were possible, and if so, what all would be involved. If anyone knows of a writeup it would be much appreciated.