Originally built as a SD 40 for the Baltimore & Ohio Railroad in May 1967 with Roster #7493, this engine has been converted to a SD 40-2 by CSX. November 2012.
CSX Engine 6159 was originally built for the Western Maryland Railroad as a GP40-2 in February 1977 with roster #4260 and was later converted by CSX to a GP38-2S. October 2012.