The stock shackles can be wobbly since they're press-fit on one side and can be loose. You could weld that side and solve that. I've got 2 sets of shackles that I made a while ago and replaced, 1 pair 4.5 inches eye to eye and one pair 5 inces eye to eye, I'd sell both pairs to you for the price of shipping! Hate to throw them away. Close to 1 inch lift either set.