Here's my projects since then:
A legit, Original "Spy Hunter". Saved from the scrap pile and mostly restored. All I have left really is the side art. I reworked the monitor, power supply, fixed a hunk of bad connections and it worked !!! the whole front has been cleaned/painted as needed. The CP came out super.
The Mortal Kombat I got as-is, working. I snagged it mostly for the cab, but the kids have so much fun with it I couldn't bring myself to mame it. It's a Jamma cab, and I've a few Jamma boards around, so I'll be leaving it and just switch boards when the mood strikes. (I recently grabbed a Neo-Geo Jamma board and some carts for it, Metal Slug in a MK cab anyone?)
The Pole Position cab was also dead when I got it. P/S smoked and board edge connector burned up. Fixed all of that, got it runnind and found out it had the ROM upgrade to P-P 2 !! So I swapped out the marquee, changed CP's (the one that was on it was trashed) and cleaned... cleaned ... cleaned...
It still needs a monitor, it's badly burnt and the chassis needs a kit anyway. I do have a perfect bezel glass, but it's out so I can swap monitors.