I saw a forum user customise his PCS5 and even added a 2nd tonearm:

Looks every cool and it would be useful to have a 78RPM cartridge in one and a Stere cartridge in the other. It seems that my PCS5 has a space on the top left where something can be mounted. Was this originally designed for adding a 2nd tone arm? And would that also then be the exact location to place it? Does anyone else have experience with this? I would be very interested to try that. All advise is highly welcomed!