So far in game we have 2 of the 3 large locomotives that UP requested to replace the Turbines, GE's U50's & EMD's DD35/DDA40X. So why not add the last piece of the puzzle. Granted, it wasn't the most successful locomotive. Only 3 were delivered in 1964. 2 A units numbered 60 and 61, and 1 B unit, 60b. The locomotive had a very short life due to overheating issues and poor performance. All 3 were scrapped in 1972.
