After soda blasting, pressure wash metal. Take your time and do a good job of it, then wash with soap and water and pressure wash it again. Prep surface for etching, then etch and prime. OR, after the last wash, let it surface rust just a little, towel off the rust and paint it with P.O.R. or something of a similar nature. I've been using POR for a long time. If it's good enough for the Navy, it's good enough for me. Prime over the POR and paint from there. DON'T sand the POR!! Get the primer on while the POR is just a little tackey, but mostly dry. (if you can touch the POR without it sticking to your finger it's about right.) Spray the primer and let it cure overnight, then start the prime sand, prime thing till you have a smooth base for the overcoats. When it's all done, let it cure for a month or so, then wet sand and buff out. Let that sit for another month before you apply any polish or surface sealer. I paste wax for the first coat, after that I just use a wipe on wipe off wax. The paste wax is a tough job, but done right, it will last a long time under the wipe on wipe off stuff.
jim
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1984 K20 350M engine with 465,000 miles. Well, it's finally done!! Almost 2 years of work, but it was really worth the effort. Little stuff left to do is mount winch, wet sand & buff out and build belly pan\running boards. Body work takes lots and LOTS of beer!!!! God, Guts and Guns made America and God, Guts and Guns will preserve it! The worst thing you could do is get into my sights, but that don't matter, you'll never know it, cause you'll never hear the shot
Jim or Paladin whichever you choose.