I just purchased a 2010 Dodge Journey SE with added exterior and interior options. It has the safe and sound package. The radio ID is RBZ; I was under the impression that this model radio had Sirius SAT radio, but from what I can see, it does not. I see that the manual and online user guides show that it does. Are there multiple types of these RBZ radios? and if so, is there a kit to add Sirius to this radio I have or do I need to upgrade the radio altogether? Help, please!