SW1500s 343 and 318 by Frisco.org Posted on July 10, 2016 SW1500s 343 and 318 SW1500s 343 and 318 SW1500s 343 and 318 at Memphis, Tennessee in January 1981 (Lon Coone). This entry was posted in Slides and tagged 318, 343, Electro-Motive Division, SW1500. Bookmark the permalink.