SD45 946 and GP40-2 752 by Frisco.org Posted on March 30, 2017 SD45 946 and GP40-2 752 SD45 946 and GP40-2 752 at Tulsa, Oklahoma on September 20, 1980 (Gene Gant). This entry was posted in Slides and tagged 752, 946, Electro-Motive Division, GP40-2, SD45. Bookmark the permalink.