Originally Posted by The Weapon

I compared the part numbers on the wiring harness and the only variation on the wiring harness was the one listed. The rest are the same for Touring Models. If it was a Base, then yes.. you would need a ton more stuff. But I think the Touring comes with a Bose stereo which includes, amps, speakers, bluetooth for phone, ipod integration, and XM. If it doesn't those are only a couple extra harnesses that are about $35 each.

the Nav antennea is in the dash from the looks of the diagram