Here is a long thread on RF (100+ pages):
w w w . ramforum . com/threads/how-to-install-a-2018-4c-uaq-uas-radio-in-2013-2017-ram.116140
There are part numbers in it but I don't think anyone has collated them yet. If anyone has, I would expect it to be mpgrimm2.
I currently have a Compass UAQ in my 2015 that originally had a RA3 with dual auto climate control (some people had issues with their HVAC control unit, I did not). It does some goofy things. GPS shows distance in km unless I use the top right corner reset. When it comes back up, it reads in Miles but switches back the next time I start it.