More SD70ACC rebuilds for 2018.... Although the first two SD70ACC rebuilds have not yet been completed by Progress Rail, NS plans to have them rebuild 50 additional units in 2018. As a reminder the SD70ACC units are being rebuilt from NS standard cab SD70's and converted from DC to AC traction. The standard cab and low short hood on each will be replaced with a new widenose and cab, as well as a new electrical cabinet, new electrical system, traction motors, etc. The units will be numbered NS 1800-1851.