I have the rear view mirror version that clips over the existing mirror and it cost $150 fitted but heaps cheaper if you do it yourself the only problem I had in my dual cab dmax was it was fairly small and you can’t see the screen with polarised glasses on . I recently changed the stereo in my dmax for an alpine wireless CarPlay with reverse camera and 4 door speakers to suit and it has a great easy to see camera even with polarised glasses on but that cost 2 K installed but the sound and usability is outstanding. Matt