SP F-units page: T&NO F9M rebuilding program
1965 Renumbering:
In 1954, EMD began a pilot program to rebuild the F3's that had come from the SP to the T&NO in 1952-1953. The result was the F9M, a locomotive rebuilt to the specs of an F9 from an F3. They would be placed in the T&NO 600 series for the A units and the T&NO 700 series for the B units.
T&NO F9MA's:
| F9MA number | prev T&NO number | |
| T&NO 600 | T&NO 323; orig. SP 6118D | EMD |
| T&NO 601 | T&NO 320; orig. SP 6110A | EMD |
| T&NO 602 | T&NO 324; orig. SP 6112A | EMD |
| T&NO 603 | T&NO 310; orig. SP 6105A | Houston |
| T&NO 604 | T&NO 306; orig. SP 6103A | Houston |
| T&NO 605 | T&NO 312; orig. SP 6106A | Houston |
| T&NO 606 | T&NO 304; orig. SP 6102A | Houston |
| T&NO 607 | T&NO 309; orig. SP 6104D | Houston |
| T&NO 608 | T&NO 301; orig. SP 6100D | Houston |
| T&NO 609 | T&NO 305; orig. SP 6102D | Houston |
| T&NO 610 | T&NO 307; orig. SP 6103D | Houston |
| T&NO 611 | T&NO 308; orig. SP 6104A | Houston |
| T&NO 612 | T&NO 311; orig. SP 6105D | Houston |
| T&NO 613 | T&NO 314; orig. SP 6107A | Houston |
| T&NO 614 | T&NO 316; orig. SP 6108A | Houston |
| T&NO 615 | T&NO 322; orig. SP 6118A | Houston |
| T&NO 616 | T&NO 325; orig. SP 6112D | Houston |
| T&NO 617 | T&NO 331; orig. SP 6113D | Houston |
| T&NO 618 | T&NO 328; orig. SP 6116A | Houston |
| T&NO 619 | T&NO 334; orig. SP 6115A | Houston |
| T&NO 620 | T&NO 302; orig. SP 6101A | Houston |
| T&NO 621 | T&NO 332; orig. SP 6114A | Houston |
| T&NO 622 | T&NO 303; orig. SP 6101D | Houston |
| T&NO 623 | T&NO 333; orig. SP 6114D | Houston |
| T&NO 624 | T&NO 300; orig. SP 6100A | Houston |
| T&NO 625 | T&NO 336; orig. SP 6117A | Houston |
| T&NO 626 | T&NO 335; orig. SP 6115D | Houston |
| T&NO 627 | T&NO 337; orig. SP 6117D | Houston |
| T&NO 628 | T&NO 327; orig. SP 6111D | Houston |
| T&NO 629 | T&NO 329; orig. SP 6116D | Houston |
| T&NO 630 | T&NO 326; orig. SP 6111A | Houston |
| T&NO 631 | T&NO 315; orig. SP 6107D | Houston |
| T&NO 632 | T&NO 313; orig. SP 6106D | Houston |
| T&NO 633 | T&NO 318; orig. SP 6109A | Houston |
| T&NO 634 | T&NO 317; orig. SP 6108D | Houston |
| T&NO 635 | T&NO 321; orig. SP 6110D | Houston |
| T&NO 636 | T&NO 330; orig. SP 6113A | Houston |
| T&NO 637 | T&NO 319; orig. SP 6109D | Houston |
T&NO F9MB's:
| F9MB number | prev T&NO number | |
| T&NO 700 | T&NO 516; orig. SP 6108B | EMD |
| T&NO 701 | T&NO 517; orig. SP 6108C | EMD |
| T&NO 700 | T&NO 518; orig. SP 6109B | EMD |
| T&NO 703 | T&NO 521; orig. SP 6110C | EMD |
| T&NO 704 | T&NO 522; orig. SP 6118B | EMD |
| T&NO 705 | T&NO 523; orig. SP 6118C | EMD |
| T&NO 706 | T&NO 525; orig. SP 6112C | Houston |
| T&NO 707 | T&NO 520; orig. SP 6110B | Houston |
| T&NO 708 | T&NO 504; orig. SP 6102B | Houston |
| T&NO 709 | T&NO 514; orig. SP 6107B | Houston |
| T&NO 710 | T&NO 508; orig. SP 6104B | Houston |
| T&NO 711 | T&NO 502; orig. SP 6101B | Houston |
| T&NO 712 | T&NO 510; orig. SP 6105B | Houston |
| T&NO 713 | T&NO 512; orig. SP 6106B | Houston |
| T&NO 714 | T&NO 505; orig. SP 6102C | Houston |
| T&NO 715 | T&NO 503; orig. SP 6101C | Houston |
| T&NO 716 | T&NO 501; orig. SP 6100C | Houston |
| T&NO 717 | T&NO 507; orig. SP 6103C | Houston |
| T&NO 718 | T&NO 513; orig. SP 6106C | Houston |
| T&NO 719 | T&NO 519; orig. SP 6109C | Houston |
| T&NO 720 | T&NO 500; orig. SP 6100B | Houston |
| T&NO 721 | T&NO 509; orig. SP 6104C | Houston |
| T&NO 722 | T&NO 506; orig. SP 6103B | Houston |
| T&NO 723 | T&NO 511; orig. SP 6105C | Houston |
| T&NO 724 | T&NO 515; orig. SP 6107C | Houston |
| T&NO 725 | T&NO 524; orig. SP 6112B | Houston |