I searched the forum and didn't have any luck finding an answer. I'm a bit thourghly confused with what I've been able to find on the internet, so hoping someone here can help out.

I want to keep everything factory so not interested in after market. I have a 2005 Ram 1500 Quad Cab.

I currently have the RBK head unit. I want to swap that out for a navigation head unit and satellite radio. I'm having a difficult time trying to figure out what all I need to make the swap. I assume I have the wiring to make this work. I'm tracking I will need the following parts:

-Nav capable radio. Not sure if I need the RB1 or RB4
-GPS antennae
-Satellite Radio receiver (again not sure what part I need)
-Satellite radio antenna

What am I missing?

Thanks ahead for any help