PC and CR normally used 4 axle power on OPSE/SEOP,Selkirk was a GE yard under PC/CR,U23B's to B23-7's,a bunch of Dewitt Geeps did a lot
of the switching,EMD switcher power was rare this way. This was due to 3rd rail clearance need on the former NYC electric division,
that finally became the Metro region under PC/CR.
PC kept the freight ops in the Northeastern Region,CR continued that "tradition" as the Metro Region was Passenger ops only for
the MTA service contract then in effect.
Believe the D&H was the first to run 6 axle power down the Hudson line to Oak Point,after modifying pilots and fuel tanks to clear the 3rd rail
The Land of Enchantment is not Flyover country!