"Vicente Vazquez" wrote in message
...

I've only seen pics of P-47's with the 75 , 108 or 150 gallon drop-tank,
but
never seen this one ...

http://www.aviacaomilitar.com.br/webkits/hc001.jpg


My guess is a field modification. A standard 75 gallon tank split at the
joint with a plug inserted.