I know this option wont be for everyone. But the fact that ford offered this and its smog legal is nice. Technically in CA a catch can will fail smog because it was not a factory option. Its deals with emissions related equipment.
Not sure on the price im sure @Goose17 will chime on that part.
Ford has it listed for $490 on their site (link below). Many vendors are now selling it. I’ve seen it listed for as low as $430.
2020 GT500 5.2L OIL-AIR SEPARATOR