Your price is actually decent if everything is clean and works. The problem is, it may take you time to sell it. Your basically waiting for some one who has a "back to stock" frenzy or a shop that's fixing a customer's car. It's a rare window of opportunity :/
Maybe you can call around at the Mustang shops and put the word out, other than that, store them neatly and patiently re-post every once in a while. Good luck!!