RS-2m 554 by Frisco.org Posted on October 9, 2014 RS-2m 554 RS-2M 554 at Springfield, Missouri on March 28, 1964. The unit has been rebuilt by EMD with a 1,500 horsepower 567C engine. This entry was posted in GS Collection and tagged 554, American Locomotive Company, RS-2, RS-2m. Bookmark the permalink.