yup, mine had the coin mech, but all stripped out now. most bits got junked as we had a skip at the weekend but still got mech itself (all the coin chute metalwork is gone tho) if you want it y'can have it for the postage cost, it'll just gather dust otherwise.
after stripping speakers apart, i decided to stop trying to re-invent the wheel and just wired them into what was feeding that odd little PSU (now removed). so 2 main speakers now up behind the grills (one grill lifts out so you can tweak volume/bass etc.) and the subwoofer is sat where the cash box used to be.
i'm now in the middle of placing 2xUSB sockets in the blanked coin return door so i don't have to open her up every time i need a keyboard and mouse, and i've added a switch where the coin reject was which i'll wire to the PC's power button.
i'll try and sort some pics if i remember, very much liking the look of yours painted, might consider that myself once its working how i want it to.
made the mistake of getting the PC set almost how i want it, so now i keep getting distracted with a bit of gameplay instead of working on it