2017 xl with proximity sensors no camera
 

I'm about to purchase a 2017 XL with the proximity sensors in the bumper but no back up camera and I was wondering Is there any way to install a OEM back up camera that also tracks the proximity? The reason I'm asking is if you don't have a camera and you throw it in reverse the head unit displays anything that you're about to hit(The three little proximity wave things idk how to explain it..). If I put in a back up camera is it going to over ride that? There may have been a setting to switch in between the two screens but I briefly sat in the truck and that was the first thing I noticed. If there happens to be a camera and I just missed it is there a setting to switch between the two screens? Any information is appreciated!

I just found out it's called the rear parking aid. Anyone know if these overlay?