Cool! Keep the interest coming and the thread alive -- am hoping we will hear something from Swift later this coming week.
Tell me those airhorns don't look cool as ****! I'm not much of a "show off my underhood" kind of guy, but those pieces are works of art, AND should net decent gains, as well as sound amazing.
I'm envisioning something like this crude picture --
Everything would be sealed, so no hot air can get in. Could even have the cool plexiglass top so you can ogle the air horn, as on the FR-S version.