Selling Stolen(?) Items ebay.

So heres the deal, I was at my local gameshop, as I was leaving this guy yells at me. He says he has an Xbox 360 that he wants to sell, he says I can get it off him for $100. I figured he was a druggie or something and needed the money for crack or weed. Well I buy it, I figure I can sell it on ebay. The system works perfectly fine but.....The problem is I think it's stolen, there's no serial numbers or anything on it.

If I do sell this is there anyway they could track it?

There's no way they could track you, it's ok to sell it. If somehow they do, tell the police that someone on the internet said it was ok.