I should not have... But I did!!! ...Now what am I supposed to do?

it sounds like a big headache, but you could make a pretty penny off this and recoup your loses by following RubberChicken's advice

 

On top of that, take it back to your buddies shop and ask him to store it while you get it sorted out. That way it is in the keep of a legitimate business. He can then do a mechanics lein and pay him some dough for his troubles.