How does well does it work with SCB6120? 
  Haven't actually tried it yet, but the SBC6120 has a regular RS232
connection there's no reason why it wouldn't work.
 PS: while the wrong list, Bob have many people finished
the PDP/8 front 
panel
 PCB's? 
  I don't know - the majority of people who buy kits never write back to
tell me what happened.
Bob