Thanks all for your input. The F-80 wing tanks I found on the web appear to be fully fusiform - changing in diameter along their entire length. My tanks have the center section as completely cylindrical so that would seem to rule out the F-80. I do not believe from my calculations that my tanks were over 200 gallons US. That would seem to rule out the Hunter. Regarding internal baffles - there are 2 circumferential rings about 4 inches width located at the lift points that the lift hardware screw into with 8 screws each. So these are strengthening bands as well as internal baffles. I thought the rod going through the center from nose to tail to hold the 3 sections together would be a dive away but I guess that detail is lost when you are filling them or carrying them.
Please keep your ideas coming. Would love to know what these are off of.
Best to all
Ron