When you pick out the epoxy you plan to use, check out the tech sheet to see if it is indeed compatible with the phosphoric acid treatment. Some epoxies are, some are not. If they are incompatible you will not notice the issue until about six months after your paint finish is complete and your truck is sitting in the sun at a car show. The paint starts to react with the acid, small bubbles (about 1/16 diameter) show in the paint finish as delamination takes place. Just an FYI to insure the components are compatible before you begin to spray the expensive stuff.
