Mustang left in the cold for three years

My 1995 Ford Mustang has been sitting in the driveway in Alaska for the past 3 years, undriven. About 2 years ago, my dad tried to move it, but it didn't start. We decided its time to get it running again and we are planning to have it towed to a mechanic for repair.

We didn't plan on leaving the car idle for so long. We never bothered to drain the gas or the oil, or take any other precautions before letting it sit, so I'm nervous that the car might have major issues. What problems should we look out for? Beyond getting it fixed, I am planning to drive it 3000 miles to California in the spring. Is that a realistic expectation for a 12 year old car thats spent the last 3 years idle and outside?

Thanks for the help.

tank will be dropped and cleaned, change fluids, check the belts and hoses, but you shouldnt have any real major issues.

You have a roller cam in that engine, so there shouldn't be any cam issues. A flat cam would score a lobe because all of the oil has dripped off. Just look at all the rubber parts; fuel line connections, brake hoses, hoses and belts, and you should be fine and dandy.

Silent Chamber covered it with the rest.