We'll I didn't know we all had a longer one than you but i'll take your word for it
are you sure about Ian though
anyway. were you just measuring the length of the DS? once the slip gets packed with grease it expands and is hard to push in, esp out of the truck. That can easily account for a few inch difference. Even if on the truck it can be a slight difference depending on how stock the truck is, how much the springs have sagged, how much lift, etc.