Under Hood Toolbox-Factory Original or ????

[gmcbigbl]

I Recently Purchased This 1961 Apache From The Original Owners Estate. The 94 Year Owner Was A Putzer. He Hand Made Trays And Misc. Holders & Made Little Mods Here And There. He Was A Millright And Had Access To Tools At Work. Under Hood On Drivers Side Is A Pretty Good Looking Toolbox On Top Of Inner Fender. At First I Thought Ah Ha Another Little Mod Of His. But come to think Of It, I'm Pretty Sure I've Seen One On Another Truck. Anybody Else Ever Seen This Add On?