if you are going all original, there is one wiring harness with connects everything. you'll need an original power supply, or an adapter to use a switching power supply.
also, the pacman pcb, if its anything like my super pac man, uses mounting rails on and feet. but I don't think it really matters.
if you need parts, those are pretty easy to get.
try these places:
www.mikesarcade.comhttp://thearcadeboneyard.com/www.therealbobroberts.netthe boneyard is the easiest place to find stuf like harness, brackets,etc. he has a pac man harness on there now for about 25 bucks.
if you don't care about being all original, get a switching power supply, a JAMMA harnes and a pac man to jamma adapter. I have an adapter unused if you go that route. you can have it for 20 bucks. I got it from mike's arcade for 35. I ended up selling my ms pac board so i never used it.
now that I think about it I may have at least part of an original pac power supply too. or all. I'm not sure.
I have a gutted pac man cab i've been restoring and there were some bits left in the bottom I removed and don't need. its at least a transformer and some fuse blocks.