The mike is on ! I would check the different year parts books to see which numbers match up between the different tanks . Usually if the first 5 digits of the the part number match they're the same part , the digits after the dash indicate revisions to the original part . When the original part number gets revised the original number would go obsolete and the new number will be the part you get .
Disclaimer : Don't believe anything I say unless you are absolutely sure that I know what I'm talking about .