Chuck
Your pictures have the answer to a lot cheaper solution!
I googled the # that I could read on the exposed camera that you have in one of your pictures and it comes up as: 'Parking Reverse Rear View Backup Camera For 2019 Chevrolet Equinox'
A lot cheaper: https://www.ebay.com/itm/23390514-Parking-Reverse-Rear-View-Backup-Camera-For-2019-Chevrolet-Equinox-/254413806610
With a couple of the cables that you sourced from Pasternack and I should be able to fab an enclosure/mount with a little bit of design and 3-D printing
I'm gonna give it a shot
Thanks,
John