The guy who has the springs says that there are no tags on them. So its going to be hard to tell the difference according to the first poster. But the height of the spring may be able to help him. Everet I am going to be cashing out my PTO at work in march and I would like to get a lift kit from you. I am just trying to find a set of rear springs before then so I do the lift all at the same time. I am thinking I want to go the full 4" lift.