There is no hidden hardware on an S2. The body could be lifted off the tank once the fasteners and fuel lines were removed. But if you're lifting the body off anyway, might it be easier to disconnect the fuel lines and take the tanks with it, to remove them later?
Twenty years ago my tank (S2, so only one) was weeping about a quarter of the way down through a group of pinhole leaks. I took the tank out by dropping it into a plastic-lined hole I dug in the veggie garden. It was early spring, so I could still get away with this
. The tank went to a specialist who coated the inside with a magic potion. The repair lasted over 15 years, when the leaks began again. Replacement aluminum tanks were available by then, so I made the switch. RD's aluminum tanks are beautifully made and I expect mine to last. The only difference from original, aside from the material, is that the new tank has no fuel return line.