2" tube is too small to lift this way, you can't fit a wrench inside well to tighten and the studs are too long, that's why you see it with 3" box tube, lots of room for the body stud and wrench. The calmini 3" kit uses 2x3" tubing, they put a 1" aluminum disk between the body and the box tube to make up the length of the body stud. I say, make up some .5" - 1" aluminum disks to fill it in, you'll have more lift, but I think it would be more proper.