If it were me? If you know the size of your radio and if it is HK or not, I'd head over to Crutchfield and look at my options. You can get a heck of a AA or ACP-compatible system that would support your steering wheel controls and your backup camera (if you have one). Crutchfield Car Audio
I've wondered the same thing. I'd love to put a newer carplay compatible head unit in my 2015 but haven't found any evidence of someone doing so. The cars have changed so little, it seems conceivable that a 2019 head unit might be plug-and-play without too much fuss?