EMD GP39X
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The EMD GP39X is a 2,600 horsepower (2.0 MW) diesel locomotive built by the General Motors Electro-Motive Division. All were built for the Southern Railway with Southern's charactaristic high short hood. They were updated by Norfolk Southern (Southern's successor) to EMD GP49 standards in 1982. Norfolk Southern retired them in 2001, and they now are owned by Tri-Rail, after being upgraded with head end power and a lowered short hood.