I've heard good and bad about soda blasting. I know alot of paint companies have been struggling to get a handle on what is the proper method of treating surface before applying any type of primer to bare metal.I have a friend that own's a paint company that make some of the best epoxy that you can find and they do not recommend at any time to use their epoxy over a vehicle that has been soda blasted. With that being said I have seen plently of guys that are doing it and like someone else has posted I believe you really need to be through about the prep work and your ok.Good luck and let us know how you make out .Joe
