Orginal Gas Tank or??

[swalton12]

I have a 74 23 SF that I got last fall. The previous owner has informed me that the gas tank had been replaced and it was in their family since it was new. Upon inspection though it appears to be original or "well aged". Unlike the other posts here it only has one marking that I can find. It is a sticker that says AAAA Tanks, Inc Miami, FL. This leads me to belive it could be orginal because the boat was built in florida, but was owned and operated in South Jersey for most of her life. I am trying to make sure it is 100 gallons to ensure I have enough fuel for an upcoming trip. Anyway to tell other than running it out of fuel completely? How about the age?? Any help would be greatly appreciated!

Scott

p.s.Took her out yesterday for her first real trial on Penobscot Bay in Maine and she handled like a champ with six foot seas. Love the potter built hulls!!