Quoted from DerRoland:
That was little tricky: the LCD display fits direct on the LS-panel (screwholes were right placed). The LED display is smaller and the RGB panels have an offset ~5mm, so I reused my old mounting brackets from the original plasma display. I covered the upper gap between LED display and panel with a black velvet tape (prevent light from the neontube). Electrical connection are the same.
It sounds like you can't just switch them between games so easily then. For example, if I bought an LED display for TRON/Stern, I couldn't just take the LCD and drop it into Congo - mainly because I'd lack the appropriate cables AND mounting gear. I'd really hoped they'd be truely interchangeable, which is the case for the cables, but not mounting hardware.
If I bought the LED "for Congo", I'd still lack the Stern mounting for the LED.
Am I making sense???