During the early 90's the SP was quite colorful with begged and borrowed power. Witness this scene at Joliet with a set of rare C39-8's on CHPBM (Chicago-Pine Bluff Manifest).
Looking back down memory lane at the last generation of GE spartan cab which includes the six axles C series and four axles B series throughout the various of Class 1 Railroads in North America throughout the years.