Depends what you want for display. Three main options are:
1) replace the rear view mirror, but you lose the auto-dim capability (
unless the aftermarket one does it)
2) standalone display unit on the dash somewhere
3) install an Android stereo, etc.
In all three case you need to put the camera somewhere. My green P38 has a camera like this mounted on the number plate light on upper tailgate, and a 7" Android in the dash where the cubby used to be. My blue P38 has reverse sensors the prev owner installed, but the beeper sounder is a bit hit & miss. I suspect 1 or 2 sensors are knackered, so I don't use it.
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