Rio Grande Loco "disguised" as a UP Loco

This DRGW/UP 1351 is a 3000 horsepower GP40-2 that was built for the Denver & Rio Grande Western by EMD between 1972 and the early 1980s. This particular locomotive has components that lead me to believe it was built between 1972 and 1976. SSF Yard, CA. Sept 6 2007