ebay item 255867810460 I just listed it so it might take several hours to be indexed into searches.

This came from a mechanic's shop who specialized in Rangers. I'll tell you what I've been told about it:

Some of the first gen Rangers and Bronco IIs were diesel and they had an extra battery for diesel starting. The single battery was on the passenger side. This is the tray for the second battery on the driver side. (FYI later generations moved the single battery to the driver side). Some gas owners put a second battery on the driver side just for redundancy and this is the part they need to do it. It fits the battery size of the first gen, which I'm told is somewhat unusual. Note this is just the tray, no electrical connections, which you'd have to have, acquire or make.

It has some surface rust but no rot-through; nothing a wire brush and a rattle can can't solve.

I haven't seen any of these for sale so I'm going to let the auction set the price. Please no offers or requests to BuyItNow.