Here is a super neat never opened detail part for your Texas Special (MKT) consist. Since the major manufacturers only focus on the main flags of the railroad world, you probably have to make your own specialty train. That's where Tomar's Tailsign kits come in. These are awesome kits to add a lighted drumhead to the end of your passenger train.
This one is for the Texas Special, the Heavyweight passenger train. This lighted Drumhead kit for the Missouri Kansas Texas Texas Special is a rectangle. The kit is new in the packaging, old store stock that has never been owned. The catalog number for this one was N-531.