Wladek, I think you are absolutely right in plating the parts before powder coating. I have seen so many powder coated parts rust - possibly worse than painted parts. I personally feel that a powder coated finish often does not bond as well as a fluid applied coating. And in this case, the powder coated pieces will rust quicker and worse than anything painted. I've seen suspension parts, springs, wheels, center caps, frames, and chassis systems - all powder coated - and all rust terribly. You are doing great work!