yah, but thats pretty nice for an antique. enjoy it.
dont drive it to fast, 55mph saves a lot on fuel with a tank like that.
you could put those E3 magic spark plugs in it...
79 is a 78 if you try finding a manual for it.
even if you could come up with a self regenerating hydrogen fuel cell, you still have to vaccume pump that into storage. one molecule of any gas occupies 24 liters. you can not fudge avogadro's number.