Hello Nevada, as I understand it sandblasting is not really good for the metal. It can stretch the metal out of shape. Soda blasting or Chemical dip would be better. That's as I see it. Someone with more experiance will follow with some more or better info. As for the little dents, You should try them yourself. It's not really that hard to do. Watch a vidio or read up on the subject and give it a try. The only thing I can tell you is don't mix up too much at one time. Good luck, Steven
