 Private rail operator West Coast Railway, which had successfully tendered for operation of the Warrnambool railway line in the privatisation of the Victorian passenger rail network, modified the locomotives as part of an ambitious plan to operate steam-powered express passenger services running to the same timetable as those operated by modern diesel electric locomotives.In order to ensure the locomotive's ability to reliably keep to the timetable, a number of notable design changes were made.These included the replacement of the original single blastpipe with dual Lempor ejectors, conversion to oil firing, fitting of power reverse, and the addition of a diesel control stand to allow for multiple unit operation with diesel electric locomotives where required.