Here's a little excerp from the SP modelers site regarding low nose phIII GP9's:
"SP's last order of GP9's #5872-5891, were delivered in August and September of 1959. These Phase III units came with low noses, 48" fans, and painted blood nose. These were among the 'last' GP9's built by EMD for a US customer, and (despite persistent rumors to the contrary), were the only order of low-nose GP9's built for a major Railroad. GMD in Canada continued building GP9's until 1963."
Thanks,
Wolf