GP7 508 and Caboose 1163 by Frisco.org Posted on December 26, 2015 GP7 508 and Caboose 1163 GP7 508 and Caboose 1163 at Enid, Oklahoma on April 3, 1975 (William Eley). This entry was posted in Slides and tagged 1163, 508, Caboose, Electro-Motive Division, GP7. Bookmark the permalink.