Just burned. There are no rust holes or bubbles anywhere. Since i took the pics i have taken a rapid strip disc to most of the body. In 15 minutes i got it 50% stripped. Its all just surface rust. very easy to remove. if your looking to restore a jeep to show then don't buy this tub. if your looking for a rock solid tub with minimal body wave this is for you. warpage can be covered with flares and rock sliders.