Well, anyone with a real '82 GT that's that clean, that has the original rims on it, likely has spent a pretty penny on tires. There are still some specialty tire places that sell those metric tires but they're literally $400+ a tire. If he's spent $1600 on tires, he wouldn't be selling the whole car for that cheap. Hell, it could be sitting on jack stands without any wheels at all and it's still worth more than that. I would imagine even without an engine it would still sell for that much if the rest of the car is as clean as it looks.