Any cool ideas out there for sounds? I went with a smooth dash in my '53, so restoration type in-dash units are out. I like the idea of the "Secret Audio" system, with the small control head you could mount in the dash, and the main unit maybe under the bench seat. But frankly it looks a little out-of-date now, what with MP3, iPod, satellite radio and all that other stuff integrated into car audio in modern in-dash units. Interested to hear about what some of you have done.