Nec: New York - Stamford

Pretty sure New York Penn station has been the same from the original NEC route, and has never been updated in any route it has been (Someone correct me if Im wrong)

 

NYP was eventually updated for LIRR Commuter to get rid of most of the platform collisions, and it is basically this version in use for Morristown. I think you are correct that the original version for NEC did not get changed much for either the original LIRR or NYT. Much of the original NEC from Newark to NYP was also ported to NYT, with lighting updates.