Is it possible to get my 74 Duster slop free steering

The other alternative is spring for the Borgenson gear box and you'll be very happy. I know it's not cheap, but I have it in my 71 cuda and it is head and shoulders above the original box. Prior to the borg box I had a steer and gear police box and it was better than what I had originally in the cuda, but not as good as the Borgenson.