Went to a local stereo shop to talk about this, and he tells me I likely already have a camera splitter like the one posted above. So any stereo with a single input for a camera would work as only the powered up camera will be displayed. I didn’t know that. So that opens up the types of stereo I can get.
Now the only problem is viewing angle. According to the stereo shop guy, nobody makes one with a floating screen where the screen can be adjusted side to side. With mounting location of the stereo being in the center and the dash being flat, it means no matter what I’m going to be looking at the screen from the drivers seat at a pretty significant angle. So my only hope is getting a big screen, like 9 inches, and hope it’s bright enough to be visible at the angle.