Food for thought,
PPG and Dupont will NOT warranty their lines of paint when soda blasting is involved.
There is a reason most knowledgeable resto shops avoid soda blasting, paint adhesion problems.
You MUST neutralize the film left behind or you will never get paint to stick. Typically involves scrubbing bare metal with a water solution, IMO bare metal and water do not mix. The additional labor involved in getting a soda blasted car truly ready for primer off sets the cost of going the traditional media blasting route...Eric