Mornin' Denny! Wouldn't mind seeing a least a pic of the overflow tank myself. I had to look it up on my repro Chevy Accesories list for 1950 as I wasn't aware of that tank.Given that there are parts numbers for a pass and a truck, I would be surprised if many truck buyers even bought one as it seems an item a truck buyer wouldn't consider necessary in the AD era.
So,an original in any condition is probably hard to find now.
