I should know better to chime in on this as its a topic that has been discussed before. For starters, my chassis was sandblasted with three shots of PPG DP90 epoxy (lead-based). That was (gosh) 5-6 years ago and although it sits in my shop, it looks as good as it did when I shot it. I'm totally sold on epoxy and when I sand the body down, I have no intentions to use etching primer. Epoxy all the way. But, I have also taken advantage of using an encapsulator (Rust Bullet) on internal areas. For example, I had to completely refab the inner rockers on my b-body and the insides of the inner and outer rockers were cleaned, sanded, etched and encapsulator (bullet) applied with success. I tested this product out and on smooth or surfaces that are not properly cleaned and etched it sheds like paper. I'm no expert but I'd expect the same to occur with an epoxy on improperly prepared metal. I intend to use rust bullet under the body above and around where the perimeter frame meets the rockers. Why? Because I can't be 100% certain that i've removed every tidbit of rust from this area. There's some pitting in areas and if I could have bought repop'd floor pans I would have done so but these parts are just not available. I have no rotisserie and no means to move it out of the shop to sandblast. Anyway, once this area is hit with an encapsulator, the entire underneath will be shot with epoxy and then with something else to provide durability. Maybe Endura black since UV won't be an issue. I respect everyones opinion on this forum. Whether you are a novice or an expert, you make this forum tick and I thank you.
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