I started sanding the fender and doors on the passenger side of the car today. What I found was kind of surprising, sort of. While I did expect some Bondo near the bottom of the doors because of the shape they are in, I did not expect it to creep half way up the door. It does not appear to be rust damage as on the bottom, but more of maybe accidental damage. The rear door showed some dents that were filled in, so without sanding this all the way down now, I am guessing that there is some type of body damage on the front door as well. For now, the paint is down to the metal (mostly) which is my main objective and I will concentrate more on this filler in a while.