just to echo the views of everyone else, you don't have to restore it now, but don't ruin it for later. if you do mame it, stick with the j-pac...or do something similar because now that i said it, i don't think pacman was jamma...but don't tear all the wires up inside, because that's important to collectors. as for everything else, just work in steps. replace the underlay and cosmetic things like that first, and then get all the other parts when you want to completly restore, like pcb and control panels with overlays. but hey, good luck. it's worth a pretty penny.