SD45 6657 (Frisco 907) by Frisco.org Posted on February 9, 2014 SD45 6657 (Frisco 907) SD45 6657 (Frisco 907) at Fort Worth, Texas in May 10, 1981. This entry was posted in BN Patched, RT Collection and tagged 6657, 907, Electro-Motive Division, SD45. Bookmark the permalink.