Pass? Even if something is free the money to make something go could be crazy money and labor. We don't know anything about the engine compression and leak down or even if its water tight. Unless your mechanically able to do it all, it could get ya. I didn't notice your location and you got ask yourself is it possible the engine could of froze and cracked block and/or heads. Sitting since 2005 where outside? Is the wood framing/floor soft? I'd be cautious of it thats all. Very cautious.
