I used a peice of 1/16x 4" by 4 feet long. I had to cut off that contured peice behind the front fender and just under the front of the door and then re attach it. but the repair runs from the very front all the way to the rear wheel well and makes a great anchor for the torque boxes plus its now perfectly staight, even better than new as well it ties in my new floors great as well.