You can put a standard factory Nav that came in a 2011, or upgrade to the 2012+ version which has a built in hard drive. Nav is much faster, you can store music on the drive, and it has a completely different and nicer interface. I did the upgrade in my 07 (one of the first on this forum to do so). I bought mine from Greg at CPS Audio. His contact info is in this thread somewhere. He will send it to you ready to be plug and play, harness and all. Its definitely a sweet upgrade because with the factory backup camera, you will gain the guidelines which move with the steering wheel.