Since the stock spring packs were narrower than the 2 1/2-inch-wide Rancho Wagoneer lift springs, we had to nip a bit off the centersection casting for spring U-bolt clearance. We used a pair of YJ spring plates with some stock Dana 30 U-bolts to cinch the axle to the springs. Don't forget to measure your caster and pinion angles. Our caster came out at a perfect 6.5 degrees, but you can use steel shims that bolt to the spring centerpins to dial in your angles. Shoot for 5-7 degrees of positive caster in the front axle for good handling on-road.