Conrail EMD SD45-2 6666 and SD45 6078 pose at Cresson, Pennsylvania on March 20, 1978 in a photo by David V. Leonard. A year and a half after the formation of Conrail, these units are still in Erie-Lackawanna colors with "CR" painted over the E-L diamond. Unit 6078 was built in 1967 as E-L 3613 in class MFE-36D-6, while 6666 was outshopped in 1972 as E-L 3681 in class MFE-36D-6B. 3681's group of 13 locomotives was built with large 5000-gallon fuel tanks, enabling them to handle premier intermodal trains in a round trip between New Jersey and Chicago without refueling. With the breakup of Conrail, 6666 became Norfolk Southern 1705. Sister unit NS 1700, the former E-L 3669 and Conrail 6654, has been repainted into Erie-Lackawanna colors and, as of May 2017, was working Conrail Shared Assets' Garden State Secondary (formerly Conrail's Chemical Coast Secondary).