So I am trying to decide what these springs I am installing are. So if I look at the attached pictures, I get 5 effective wraps and .660 diameter should give me a compressed length of approximately 3.5" for the rear and if I have 10 wraps at .580 gives me approximately 5.8" compressed length. I am trying to figure out my bump stops so I am starting with the springs. The rears are a 4" lift, expect the fronts will be the same. I am assuming that they are rough country based on the guy i got them from, they are used. Thanks anyone who can look at them an correct my math.