You can stud weld and pull them with a slide hammer and get them somewhat straight or you can keep the patina. Sadly, it doesn't look like you will get to do both. I assume they are all rusting from the inside out. Personally, I'd leave it and see if it "grows" on you. Or doesn't bug you too much. Wheelin' a truck with a little trail rash is a lot more fun than stressing over getting a pretty rig into a bad spot. It is all gonna' rust or burn man.
