I’m an attorney, not an auto repair shop, so I don’t have specific answers to this issue. I did find a couple of books, though, that talk about signs of a wreck. They are written by Danny Wyatt, who ran a body shop in North Carolina for years. He wrote 2 books on the subject: “Collusion Collision” and “Signs of a Wreck.” You can see more about them at http://csiofnc.com/collisioncollusion-signsofawreck.html. If you are buying a new or used car, it may be worth the look to prevent being tricked by a car salesperson or car dealer that has taken a wreck or salvaged car and fixed it up to look brand new. A few ounces of car fraud prevention may be worth a many more pounds of cure.