50 units
-5930-5949 built in 1989 as NYSW 4010,12,14,16,20,22,42,48,26,28,30,32,38,36,18,24,34,40,44,46.
-5950-5961 built in 1988 as CONRAIL 5060,61,62,65,70,71,74,75,76,80,86,87.
-5962-5979 built in 1988 as CONRAIL 5063,64,66,67,68,69,72,73,77,78,79,81,82,83,84,85,88,89. Then to NS 4800-4817, CSX purchased in October 2006, upon lease termination at which point NS did not wish to renew.