Saw bare wpc mouth boards on eBay and they provide a bom to populate them. Does anyone know if some parts would be hard to find if I wanted to populate my own. I have seen other posts on how hard it is to find older comments these days and I'm honestly not familiar enough with these mpu'. I would hope digikey and mouser would get me 90% of parts and then find the remainder on eBay or other means? What do you think?

Found this post which answers a lot of my questions.

https://pinside.com/pinball/forum/topic/partially-assembled-twobits-wpc-mpu/page/2

thanks guys! What is the opinion/ consensus on the aftermarket twobits boards vs oem Williams ones? Quickly reading that post i attached said that the wiring schematic will not work with the aftermarket board and might make it hard to troubleshoot?

Any other boards costs effective to build (other kits) and components are redidly avalaible?

I have no need for a spare but it would be cool to improve soldering skills and tackle one of these puppies.

And I guess to your point the people who would want/ like to do that would probably rather repair their current board no?