Everybody wants something unique. As soon as a company/individual responds to that "want" and mass produces the product, there is a flurry of buying, and then the part is no longer unique. If you truly want uniqueness, then you have to step up with either big dollars for custom machining work, or big ingenuity to make something yourself. I have seen a few "unique" valve covers made by finding a set of old rocker covers from the fifties or sixties which have the engine type/name embossed into the cover---then cutting and grafting them to a set of "factory" small block metal valve covers. I have even seen old "Hemi" valve covers used on small blocks (some say that is sacrilege, but it sure makes people set up and take notice).---Uniqueness doesn't come cheap---or easy.