Back in 1985 I asked a Ford dealer where I bought my 3/4 T dually, with extended cab / 8 ft bed, I asked him when they were going to bring out a short box with a full 4 door.He told me they would never sell and had no plans.
Now Dodge has shortened their short box another 3".I isn't ven6&1/2 ft anymore

If God wanted you to walk and carry things on your back, He would not have invented stirrups and pack saddles