I was hoping someone could help me out. I have a 2007 Dodge Ram 2500 and I want to upgrade my OEM radio to the OEM GPS/NAV. I have found a few on E-bay and I was just wondering what will I need to do this upgrade. I know I will need the new dash bezel and the mount kit, but will I need the GPS antenna or does it use the same antenna as the SAT radio? :confused013: Has anyone out there done this upgrade that can offer some advise. I sure hope so!