Drop tank education

I found this drop tank many years ago. Uncovered it during some cleanup. I never knew what it fit or who to ask. I know the question will be answered before you read the it. What the heck is it from? About 91" long, 25" at it's widest. Flange is about 1/2'.
I think it would be too small for a V-8 but a 4 cyl, or maybe a 2 or 3 wheel tank would be ok.

 

More pics

 

Another one I found on the web somewhere

 

I don't think thats a 75gal P-51/P-63 etc tank, but its very close.

 

Maybe you should ask over on landracing.com where all the salt racers hang out.

 

they turned a lot of those into carnival rides. as seen on american pickers. they passed up a few of them and i wanted to reach through the screen and scream!