For System 80 --
J2 on the power supply requires a 6 pin plug with one keying pin at position 3
Couple options --
Molex 09-50-8061 with key 15-04-0297
Generic CS156-06-LR with key 15-04-0219
Contacts -- probably just go with 08-52-0113 for both plugs.
At CPU end -- 09-01-6051 (obsolete).
I have some remaining but there is a new Molex alternate for this one. I'll stock this one eventually.
For contacts -- 08-52-0072
For some of these - the connector bodies can be reused even if the original was an IDC type plug. Doesn't make much sense for the header type plugs (e.g. CS156) as the replacements are inexpensive. But for the edge connectors - we may need to go this route in the near future.