chavo60

Any Chrysler dealer can perform the flash. It is covered under the basic warranty period.

Chavo,
My upgrade was very straight forward when i went from the 4.3S to the 8.4N. If your 4.3 had the SAT then you should be wired for the upgrade. As Mc has stated, the lower stack is important if you want the SD card functionality (i use it for music here in Europe) and in my case the different stacks didnt make a difference with the climate controls but my DJ came with bluetooth, voice control, etc. and that may mean my wiring may be different from your situation. Take a look at my pics of this mod. It may help you identify it your wiring is similar. Best of luck to you.
http://www.dodgejourneyforum.com/gallery/member/6079-aukfan33/

Hey Chavo.
If I were you, I'd try really hard to get the screen and bezel all together.
There's a bunch of small parts that might be missing omfrom the bezel.
The overhead DVD isn't going to work if you don't have the OEM wiring. (all of it)
Besides, the OEM set up uses supporting hardware inside the lining, like the moulded frame inside.
You might be better off getting a universal DVD overhead player. Or a couple of galaxy tab 2 7". (I got mine for 149.99 @ micro center on sale) and mount them on the headrests.
I still haven't been able to fix the auto climate error also, so be prepared to deal with that. I lost control of the rear climate from the front also.
Keep in mind, if your current radio doesn't have SAT radio, you don't have the gps antenna for the nav to work.
You need that.
Ic you don't have Bluetooth, you wont get it from the RB5, you'll need other stuff for that to work.