What’s the worst amount of body damage/bondo you discovered after you bought the car??

A friend was going to buy a 68 or 69 383 cuda 4sp vert...it was in ruff shape,you could see the bottoms of the doors and both quarters were heavy with bondo.The crown jewel was under the hood...there were no bolts holding the fenders and there was just one seamless flow from the top of the inner fender up and over to make the fender and inner fender one nice piece...everywhere you looked you could see someone covered the bad spots with bondo
But that car ran strong...power shifted smooth as glass.