Aftermarket wheel on a 1974 Plymouth Duster

Hello everyone! I wanted to know what I need to put this wheel that is a 6 hole on my Duster, is this adapter the only thing I need? Or do I need the grant installation kit too? I don’t know if this will change your answer but my car doesn’t have a horn so I’m not worried about that.

F944C289-8160-48F2-B285-E7CC81B2BBD9.png

896893D5-75D8-4571-92FD-EECA6A5EF499.png

A62C6D54-7991-4449-A32B-F6D54B23143B.png