Ill need Marquee, PCB, and CPO. Also, Mine was converted to a JAMMA game.. The board in this picture, hooked to the left side of the cabinet is missing. What is it, and are they easy to come by?
IIRC it's an AR III or is it II amp and power board. Shouldn't be too hard to find and if you really need to I believe a different style atari amp board can be used in conjunction with a switching power supply.
some system 1 games had run off a ar3 and some off a switcher. the picture you provided is running of a ar3. its the board in the back left. You can buy the ar3 and harness from quarterarcade last time i checked.
Yep, those both would be good starts. You'll hopefully get a good MM CP harness when you pick up your kit/panel. It plugs directly into the motherboard for the most part.