| Number | Make | Model | Builder Number | Build Date | Service Time | Unit History |
| 1703 | EMD | GP9 | 21712 | 06/1956 | 19xx-1978* | ex C&O 6075 |
The 1703 began service as C&O 6075. The unit was acquired by PNC 1703 and was leased to the A&BB. After returning to PNC the unit was sold to IAIS and renumbered 303.
