I've got the GG.Offroad cable system coming. Here's their Tundra video. They don't have a Tacoma video yet, but a guy on the other forum did it to his Taco.
https://www.tacomaworld.com/threads/digital-camera-relocation-in-my-trd-or.833205/
I think it would take a change of the HVAC controls, since the volume knob is between the air vents. I also think they may be scarce since I tried to find a dealer with an OR Upgrade package + the 14" screen and it's not happening.