22 locomotives into cabbage cars between 1996 and 2007. Each converted unit was renumbered by prefixing "90" to its original number. In 2011, Amtrak converted F40PH No. 406 to an NPCU to enable push-pull operation of Amtrak's 40th-anniversary exhibit train; in addition, a HEP generator was installed to supply auxiliary power. Unlike other NPCUs, No. 406 retains its original number (instead of being renumbered to 90406) and resembles an operational F40PH externally. Some F40PHs found their way into freight service, after suitable modifications. The F40M-2F, which runs on the San Luis and Rio Grande Railroad and formerly the Canadian American Railroad, was regeared for a maximum speed of and given an enlarged fuel tank. It was also fitted with a door, platform, and steps at the front. One unit, 450, was acquired by Western Maryland Scenic Railroad in 2018. Original owners Electro-Motive Division manufactured 475 F40PHs of all types between 1975 and 1992. The orders for GO Transit and Via Rail Canada were built by General Motors Diesel (GMD), the company's Canadian subsidiary. Morrison-Knudsen and its successor MotivePower remanufactured another 31 locomotives between 1988 and 1998. See also List of GM-EMD locomotives List of GMD Locomotives Notes Footnotes References External links EMD F40PH Data Sheet F40PH F40PH Amtrak locomotives F40PH Via Rail locomotives Passenger locomotives Diesel-electric locomotives of the United States Railway locomotives introduced in 1975 B-B locomotives Standard gauge locomotives of Canada Standard gauge locomotives of the United States