After the split of Conrail in 1999, NS started applying their own rack class to the former CR autoracks as they were repainted. The conversions can be seen below. Note the ML2L's were placed in seven different NS classes and the ML3R's were placed into two different NS classes.

CR class NS class

ML2D FB541

ML2E FB542

ML2F FB543

ML2G FB545

ML2G FB546

ML2K FB547

ML2L FB548

ML2L FB549

ML2L FB550

ML2L FB551

ML2L FB552

ML2L FB553

ML2L FB554

ML3N FT640

ML3R FT642

ML3R FT643

ML3Q FT644

ML3W FT645