 To test their emissions, 5989's 20-645-E3 was replaced with the MP36PH-3's 16-645-F3B and cooling system, and its traction motors removed.GN 438, later BN 6611, became a load-test box at the Alstom shop in Montreal.Morrison-Knudsen used the cowls from several scrapped BN F45s to rebuild eleven GP40s into GP40FH-2 locomotives for New Jersey Transit.