History Need Help: What vehicle and year is this from?

Hi,
Hope I am posting in the correct section. Apology in advance if I am in the wrong place!
.
Building a '27 Ford Model T Lake style Roadster.
Thinking of using this gas tank to change it up from the classic oval tanks everyone is using.
Would like to know more about it. I was told 40s big truck auxiliary tank. However I'd like more specifics as this does not yield any results on the web. Seeing if I could find the gas gauge as well as new (brass style) gas cap.
Any help would be truly appreciated. Thank you.
.
29-5/8"L x 13W x11-3/4"H


Doing something sort of like this:

 

That may be from a farm tractor.

 

You might have to look at the gauge for a maker and search for the gauge by itself. I like the tank

 

Can't help with the tank source, but using your measurements, it's about 19.6 gallons.

 

Hahaha.....ROAD TRIPS !!!

 

Nice!!! hope it's still visible !!!

 

Didn't think about that. Thx

 

I think you nailed it. This from an old Oliver 60 tractor. Pretty close

 

The gauge looks similar to one that was on an auxiliary boat tank that was in a Boston Whaler I used to own.

 

What’s the outlet? 1/8” pipe is small engine. 1/4”
pipe can get you by. 3/8” pipe, perfect. I’m guessing 1/8”.....

 

Some propane (LPG) tanks have a float type mechanical gauge which looks like it would fit in that bezel.

 

The nice thing about traditional hot rods is that you are free to use a cool, interesting part even if you never figure out what it came from.

 

I took one off a Ford school bus that looked a lot like it.