Here's mine inside a Mini Cute with the Nanao monitor that can handle medium resolution - we also added a 4PDT switch on the frame to select between 15 and 24khz - I believe it's not safe to switch whilst it's powered on - so beware if you try the same mod.
We still need to tidy up some of the wiring and move the power off the JAMMA edge onto a separate connector - when
@Arcade game & I built this we didn't know it was too much juice for the JAMMA edge. I've not run this machine for very long but we'll make that change soon.
We pulled 5v off one of the chips for the voltmeter shown - the amplifier is a bog standard Amazon cheap thing - I think we combined the SFX and music using some resistors - I'm considering swapping for something else but it sounds fine.
Power supply is not original - it's a Mean Well model