I just got an email from Anderson Composites and they confirmed that their blank deck lid panel fit on a 2020 GT500 and their panel fits all S550s. So I'd say it's very likely this Ford Performance panel fits all S550s.
I asked Ford Performance and they said this CF deck lid would only fit GT500s. What is th e difference? The plain one on Anderson's site is for all s550s. Just wondering what would cause it not to fit.