Congrats on the truck she looks sweet!You might want to go over to
Crutchfield if you want to buy an upgrade for your radio. If I were to buy a vehicle that needed an upgrade to the sound system that is were I go. At least for the head system. You can get a lot of bang for the buck. If you want a high end head unit go all the way to the bottom and look at the Alpine X009-RAM In-Dash Restyle System
Navigation receiver — custom-fit replacement radio with 9" screen for select 2013-up Ram trucks. It is pricey but it is worth it.
If you want to stay it the 8.4A or 8.4AN (nav)you might want to look at salvage yards for a radio. To get full functionality of the head unit you may need to make a trip to the dealer to have the BCM flashed for the upgraded unit.
Just note You will need to unbolt or cut out the factory radio's rear support bracket to make room for the larger after market head unit.
Don