10 months later working with my local repair wizard, and bam! she's finally done. Original monitor was sadly burnt out, so we had to grab one from a different cab. Temporarily swapped the original joystick out for a better one that moves 900x smoother, that's why it's black instead of orange.
Originally obtained this missing the top marquee, but by a miracle found one on eBay a few months later which fit perfectly. Looks like the last owner cut off a few inches of the width, but no complaints here. Just happy to have all the important parts original.
Huge shoutout to Sadler and Xelement for helping me get this. Very glad we still have a solid community.