1. 14' Silverado 5'8" Box.
2. It would fit my needs really well because I like the low profile look. I am an avid hunter and this will add storage and security to my equipment instead of stuffing all my muddy duck hunting gear in the backseat, or leaving it in the open bed for others to shop from.
3. Security is the most important for this type of bed cover, otherwise its useless. I like that it will keep things dry in the bed, but that is not a huge issue for me. The best feature of this cover is the ability to remove it completely very easily. With such a short box on these trucks having access to all of it makes a big difference.
4. No, I currently have a cam locker low-profile toolbox. Having more secure storage capacity and access to the entire length of the bed.
5. My truck is used for recreation activities like hunting and camping. It is a daily driver so the increased fuel economy would be well appreciated. I also use it for towing a boat during the warmer months of the year.