So at least I know its the original chevy cross member as some of the other guys have it on there trucks, thought it might stand for Studebaker!!!!!
maybe its to identify the press that stamped out the cross members just in case there were any quality issues anyone have any other lettering on there beds?

1940 Chevrolet 3/4-Ton
"Project XJ-PU-V12"
In the Stovebolt Gallery
More pix on Flickr

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