Stock navagition ?
 

i have a 07 ram with the stock cd player my friend has a stock navigation radio from a 07 or 08 ram. i am pretty sure they are the same in both years. i was just wondering what i all need to install it or even if it will work. I know i need the navigation bezel but i was wondering about the satellite radio and the navigation antenna.

It should already be wired for it. Believe the antenna is stuck up under the dash.

I thought the little black thing on the roof above the rear seats was the nav gps stuff?

nah

the black thing is for satellite radio, the gps antenna is stuck with double sided tape up under the inside of the dash where the radio stuff mounts. i dont think that they come with that just hanging in there if they didint have the gps form the factory, but you can get a gps antenna for like 40 bucks off of ebay.