If you are talking body panels sandblasting can distort the metal. It generates contact heat. Or seems to stetch the metal. Soda blasting or chemical dipping does not.
If you think this is not so take a piece of sheet tin and sandblast it at normal presures. If it was flat when you started it will not be when finished. . Possibly a good ideal to make moderate convex curves in sheet metal.
Your body panels are a reasonable thick gauge of metal on that vehicle so being very careful you might pull sandblasting off. Keep your pressure very low. Another trick was to add water to the sand stream after it leaves the tip. You then have to deal with almost instantainious surface rust forming.