Does the game run? My Congo had a corroded mpu. Worked okay up until it wouldn't boot. Rottendog replacement was only $135. I used all my chips but needed new ribbon cables.

I think I got my bare board from here:

https://ksarcade.net/rottendog-wpc-95-security-cpu-plug-and-play-a-20119-a-21377-mpu095.html

Guess I remember wrong about it being $135. Cheapest seems to be $175. Either way, it was a great deal for me because my mpu board was in bad shape. Repairs would of been costly and no gaurantee to work. You can always pursue getting the original board repaired and use the Rottendog in the meantime. You can always sell whichever one you are not going to keep.

I don't think wpc95 mpu boards are that rare. I see one on ebay for $85 but not sure if it works. Plenty of Rottendog ones out there. That's what I got for my Congo. Like pinballmaniac40 says, ask around.