[Addicted]

What decrease in value, if any, would you have if you have a 87-89 930 turbo that was hit by a lady in a parking lot which caused the quarter panel to have to be replaced, and a Porsche dealer did the repair work? Not noticable, and would have to be told about it or have a mechanic tell you about it to know it happened? Would it affect the value and if so how much? Thanks.