most likly has taken a toll on the suspension and breaks. both easy to repair/replace. it is just sitting down for a whole day just to get the body rolling right/safe.
if the engine is blown (how) don't worry about it aging. the trann should be safe. it is a sealed system, so water is unlikly, but it can however bond it its-self from disuse. getting it turned over the first time will be hard. after that it should begin to break loose. CHANGE tranny fluid frequently untill debri is cleared...