SP 6728-6764
These units were built as SP units and renumbered as part of the SP's 1965 systemwide locomotive renumberign plan.
1965 NUMBERS:
SP 6728-6764:
| 1965 road number | Orig. road number | notes |
| SP 6728 | SP 7528 | |
| SP 6729 | SP 7529 | |
| SP 6730 | SP 7530 | |
| SP 6731 | SP 7531 | |
| SP 6732 | SP 7532 | |
| SP 6733 | SP 7533 | |
| SP 6734 | SP 7534 | |
| SP 6735 | SP 7535 | |
| SP 6736 | SP 7536 | |
| SP 6737 | SP 7537 | |
| SP 6738 | SP 7538 | |
| SP 6739 | SP 7539 | |
| SP 6740 | SP 7540 | |
| SP 6741 | SP 7541 | |
| SP 6742 | SP 7542 | |
| SP 6743 | SP 7543 | |
| SP 6744 | SP 7544 | |
| SP 6745 | SP 7545 | |
| SP 6746 | SP 7546 | |
| SP 6747 | SP 7547 | |
| SP 6748 | SP 7548 | |
| SP 6749 | SP 7549 | |
| SP 6750 | SP 7550 | |
| SP 6751 | SP 7551 | |
| SP 6752 | SP 7552 | |
| SP 6753 | SP 7553 | |
| SP 6754 | SP 7554 | |
| SP 6755 | SP 7555 | |
| SP 6756 | SP 7556 | |
| SP 6757 | SP 7557 | |
| SP 6758 | SP 7558 | |
| SP 6759 | SP 7559 | |
| SP 6760 | SP 7560 | |
| SP 6761 | SP 7561 | |
| SP 6762 | SP 7562 | |
| SP 6763 | SP 7563 | |
| SP 6764 | SP 7564 |