sandblast the whole car???

If the person doing the sand blasting doesn't really know what there doing they will spend to much time in one panel and it will heat the metal and can distort it. Be very very careful going that route. Even though it takes forever I usually take a wire wheel such as this one on a grinder. It takes everything away and will not distort or mess with the metal. Takes awhile but it gets the job done and it sure ain't $1,800.