nytrdr24
+1y
at least part of the answer to your q can be seen in the difference in your & justins sig pics, the front of the bed is shorter from the headboard to the wheel well opening, and longer from the back of the wheel opening to the roll pan, plus the mounts under the bed are different.....now for the second part, I'm not exactly sure, but I'd say that the boxes inside dimensions are the same, so it is a possibility that a tonneau from a cab plus would fit a reg cab short box.....hope that helps.