Awesome stuff Mike 
looking good.
it will be nice to be able to offer my customers a proper replacement if their board is to far gone
+1, will be great to be able to source a replacement locally. I bought an aftermarket WPC MPU (a Rotten Dog one, from MAD Amusements) about 6 months ago for a clients game.. after nearly having a heart attack at seeing the prices some of the local pin part suppliers were selling them for 
hence why i started looking overseas.
Please note for T2 owners these boards don't work. For some reason the left flipper is recognized as the right and so on. So the dot matrix mini game works in reverse.
I believe that's a side effect of the Rottendog WPC *driver* board, not the CPU? I think there are a couple pins swapped on the RD driver board that are only used on pre-fliptronics games.. so maybe the inputs to the 4n25s are reversed or something.
Having another aftermarket CPU board isn't a bad thing. I look forward to seeing your board!
