Don't know if these have been posted here, but

These are cool to see. Check them out if you want.

1973 duster promo
http://www.youtube.com/watch?v=W-ydIeVn_0s

1971 Duster Commercial
http://www.youtube.com/watch?v=ufC8TB907ms

1970 Dart Swinger
http://www.youtube.com/watch?v=TycR57p1vzs

1969 Dart Swinger 340
http://www.youtube.com/watch?v=Xzh_kwYM5h0