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101 was built in April 1962, #27789, FN 5635-2.  It was renumbered 4101 in January 1973 and sold as South East Kansas RR 4101.  It was transferred as South Kansas & Oklahoma 4101.  It was assigned to Watco Companies as WAMX 3010 but scrapped at Jacksonville, FL in January 2008 as South Kansas & Oklahoma 4101.

103 was built in April 1962, #27791, FN 5635-4.  It was renumbered 4103 in January 1973 and sold as SKOL 4101.  It was rebuilt as a remote control WAMX 304.

104 was built in April 1962, #27792, FN 5635-5.  It was renumbered 4104 in January 1973 and rebuilt as a slug by Morrison Knudsen as Union Pacific S301, Class S5-2B, on April 5, 1991.  It was renumbered Y927 on April 30, 2001, and renumbered S927 on October 12, 2007.

110 was built in June 1963, #28388, FN 7661-1.  It was renumbered 4110 in January 1973.

111 was built in July 1963, #28389, FN 7661-2.  It was renumbered 4111 in January 1973 and sold as SKOL 4111.  It was rebuilt as a slug WAMX 503,

112 was built in July 1963, #28390, FN 7661-3.  It was renumbered 4112 in January 1973 and sold as SKOL 4112.  It was rebuilt as a remote control WAMX 306.

114 was built in July 1963, #28392, FN 7661-5.  It was renumbered 4114 in January 1973 and sold as SKOL 4114.  It was rebuilt as a remote control WAMX 301.

115 was built in July 1963, #28393, FN 7661-6.  It was renumbered 4115 in January 1973 and sold as SKOL 4115.  It was assigned as WAMX 3017 but rebuilt as slug 502.

116 was built in July 1963, #28394, FN 7661-7.  It was renumbered 4116 in January 1973.

117 was built in July 1963, #28395, FN 7661-8.  It was renumbered 4117 in January 1973 and sold as SKOL 4117.  It was assigned as WAMX 3018 but rebuilt as Non-Powered Control Unit 305.  It was scrapped in February 2011.

119 was built in July 1963, #28397, FN 7661-10.  It was renumbered 4119 in January 1973 and rebuilt by Morrison Knudsen as UP S303, Class S5-2B, on April 5, 1991.  It was renumbered Y929 on February 19, 2002