Like said above, check fluids. Don't be too alarmed if they're low, very low. How long was it upside down? Long enough for them to drain out? I would think after sitting 2-3 years most of the oil may have found it's way back to the pan. But, I would pull the spark plugs before you try to turn it over. Just in case there's any oil on top of pistons. Also could be a good amount of oil caught in the intake manifold. Don't want to "hydraulic" a good engine and bend a rod.
