Dvd Deck For Vehicle Have A 98 Mercedes With A Fm Deck And Phone Deck Can I Take Both Out And Put A Dvd Deck?

Have a 98 Mercedes with a fm deck and phone deck can I take both out and put a dvd deck? - dvd deck for vehicle

I have a set of Bose and cover regular old phone airtime. This does not yet work. Can I replace it with a package of DVDs Nice. Thanks