UP 1373 is one of only three GP40P-2s once rostered by Espee (built in November 1976). It was used by Espee in commuter rail service in the San Francisco area (as SP 3198) and had a steam generator included (hence the extra "P", for "Passenger") for power. That said, it hasn't been a real GP40P-2 in nearly 30 years! The steam generator was removed in June 1985. Espee renumbered it SP 7601 and placed it in general freight service. The extended enclosure for the generator remained, however...and remains to this day!
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