SDP40F No. 543 creeps through Stockton on April 19, 1976 only moments from pausing at the beautifully maintained Santa Fe depot. These big bruisers were actually just SD40-2s with cowling and a pair of steam generators. Graduating from EMD's Class of 1974 the 543 was one of two units transferred to the West Coast from Floridian service for use in the San Joaquin pool.