As you can see, speed equipment advertising hasn't changed much over the last 50 years or so. Back then, the ads were a mixture of real performance equipment and things like "Billy-Bob's Special Super Secret 200 Horsepower Engine Elixir". Sometimes products fade from fashion, like novelty horns, but others have been around since the beginning. Most ads of today are more polished and flashy, but many of the old ads would work just as well (with the prices raised a little, of course).