As blur noted, standard storage procedures today are to keep the car on it's suspension.
Take the battery out. Any concern about rodents? Block the tailpipe and any other possible entrances. Fill the tank to the brim and if you want put in some stabilizer. I'd also change the oil and filter so there's some nice high quality synth in there when it's time to fire her up. Wax the paint and alloy wheels.
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