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

Bought a 70 Duster in 1999 /6 3 speed one owner, I’m the second. A cream puff but maybe 250,000 miles. Drove it a couple years till I saw a bubble behind the back tire pass side. So I’ll fix it, the more I ground the worse it got. Seems the lady had side swiped something in the first year, got the bottom of front fender, door, and quarter panel around rear wheel. Front fender had about 1/2 gallon of bondo. Quarter had over a gallon but very little bumping out. Ended up getting a whole quarter off another Duster, door and front fender. Now it’s a full cage race car with a 340