possible purchase of blazer offered to me what should I do?

[RED72blazer]

a guy stopped by my house yesterday about an hour before I got home. My dad talked to him. He saw my blazer parked out in front of the house and wondered if I would be interested in purchasing his. apparently he installed an 8 inch lift and is now breaking drive shafts. A local shop told him it would cost 600 or more to fix. He said he was thinking about selling it for around 1000, I have not seen the truck yet, but i am certain I could get it for cheap. what should I do? I don't want to put money into it, but I was thinking about buying it and swapping all of the good parts to one truck and the bad parts on the other, depending upon which body is in better shape. My dad seems to think that it could be fixed by rotating the pinion. He wants me to buy it and sell it for some quick profit. what would you guys do. what do you thk is wrong with it? i will post some pictures after I look at it.

thanks for some input

red72