That SOU U23B would be a worthy unit to take a picture of back in the day. Back in the day I took a roster shot of MILW 4800 at Tacoma early 1970's. I like low-hoods and you like high-hoods. Apples and Oranges. Never heard how the MILW hogs liked/disliked running them. MILW never ran any U23B's up to Bellingham to my knowledge which would be a perfect place for them. Instead they re-assigned most of the SDL-35's to the Tacoma-Bellingham-Sumas trains. It was really one hell of a decade in Bellingham with the MILW gaining trackage rights due to the BN merger 1970-1980. Every GE unit MILW had on the roster made it up to Bellingham/Sumas at one time or another except the U23B. I had to go find one.