EMD GP40
The EMD (Electro Motive Division) SD70ACe (often nicknamed "Ace" or "The Ace" by most railfans, builders, and employees) is a type of six-axle, 16-cylinder, 4,300hp AC-traction diesel-electric locomotive which was first introduced in 2004 (the prototypes built the previous year), and has been in production since 2005 ...
EMD SD70ACe | Trains And Locomotives Wiki
What is the difference between a GP40 and an GP40-2?
The differences between a GP40-2 and a GP40 are minimal, but the most easy to spot difference is the small water sight glass on the right hand side of the GP40-2, and several GP40-2's were delivered with Blomberg M trucks with single clasp brakes. 861 units were built, with many still in service today.
GP40/40-2/40-2W - RailroadfanWiki
EMD E-units were a line of passenger train diesel locomotives built by the General Motors Electro-Motive Division (EMD) and its predecessor the Electro-Motive Corporation (EMC).
EMD E-unit - Wikipedia