SP 8436
This loco was built in 3/1966 with EMD construction number 7861-27.
She was rebuilt and renumbered to SP 7336 as part of the SP's GRIP program on 11/21/1980. The most visible external change was the addition of a full set of Gyralight to the rear of the unit.
She was one of three SP SD40's to retain her last two digits after GRIP, along with the SP 8431 & 8441. This was purely by conincidence as the new numbers were assigned in shop order as the units were rebuilt at random.