That chatGPT response is pretty funny.
Joe,
I am currently using a Perfect Tuning gauge in the dash mounted in the clock hole. It is an upgrade from my earlier units.
Here is an example of one I built for a clock years ago. Should be easy to find a display that fits the referenced location. I was running a serial output. That might be easier than CAN to get started.
http://forums.pelicanparts.com/porsche-911-technical-forum/828355-clock-replacement-programmable-lcd-dash-gauge-efi.html
I have some C code to parse the data once you get the comms sorted out.
Here is another one I found in the archives. I forgot about building this one. Man these were a long time ago.
http://forums.pelicanparts.com/porsche-911-technical-forum/459699-megasquirt-dash-display.html