Where does the ‘Empty Return’ Stencils go on n an SP SS boxcar?

Charlie Duckworth

I’m decaling the Speedwitch SP A-50-4 and plan to use it going to a lumber yard on the layout.  The decals have a white backed decals for returning the empty car to Eugene.  I’ve looked through several books but can’t find an example on where it goes on the car.  One side is angled so I assume it’s against a ‘Z’ brace. 
Charlie Duckworth 
Omaha, Ne.

Join main@RealSTMFC.groups.io to automatically receive all group messages.