Nick - Not sure what the "black" piece is. I need to do some research on that. The reddish primer piece is the sliding track that gets bolted to the truck bed frame and bed floor IIRC. Other 1940 truck owners will likely chime in to confirm. wink

Do you only have one of those pieces?

Best of luck with your sale! thumbs_up

~ Dan
1951 Chevy 3 window 3100
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"My Grandpa Carl's Truck and How it Became Mine"
1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver)
US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)