Thank you for the link, but I am still interested in what you consider a red donkey kong that you are looking for. All original survivor from that time, original parts, 4 board, original wiring.
Taito two way joystick. There have been repros of it made but is said to be tight.
https://www.arcadeshop.com/i/405/joystick-williams-rebuild-kit.htm
https://www.arcadeshop.com/i/1128/williams-red-ball-shaft-joystick-handle.htm
https://www.arcadeshop.com/i/1517/e-clip-for-williams-joysticks.htm
He does laughy faces quite often :) Don't read too much into it and just take it as a +1 to your Reaction Score. If I had to guess, some people value TE over original, but it's just two roms to change right? Couldn't you do the opposite to get original?
Strike that :) That's a lot of chips and...
They make 3d metal filament. I would be curious to see how that looks in the end. That said, it would be pretty easy to cast and make a mold of it. Just have to spend the time.
I believe there are more pcbs than cabinets made as the warranty fix was typically replacement. I have seen a couple control panels for sale but not too many. Good luck :)
I believe repro midway panels should fit. Could just get a ms pacman contorl panel and add the holes you needed:
https://twistedquarter.com/index.php?main_page=product_info&cPath=219_248&products_id=3302