Rebuilders in Swiss or Ruemema simply uses a standard E-motor with an elektric brake as a replacement for the orginal motor. It is however fitted the same and therefor poking out of the machine.I don't like that,I think it is very, very ugly.
It is incredible you found a starwheel tailstock in the US. Or did you bought it in the Swiss? I do have an (inclomplete) unused taper attachment laying around.I also have a 135 with a complete one fitted so I can see what is missing.