Originally Posted by Bad Superduty
Have their 4.5" kit ordered and wondered if the progressive add a pack will center the rear axle in the wheel well like some kits do?
Since the add-a-packs use the factory main leafs the centerpin location cannot be changed. Their full replacement Deaver leafs are designed with the center pin further forward in the pack to help with clearance. Also companies Like Pure Performance have rear block/u-bolt plate combinations that allow you to position the axle in multiple locations for the same reason.