I'm putting in a 1.75" shackle lift in my 2009 f150 fx4, but the bolt that goes in to the leaf spring is blocked when I go to pull it off. It'll hit either my box or my gas tank. Has anyone done this to a 2009-present day f150? If you did how did you do it.

 

Once the shackle is loose from the frame, lower the vehicle until the bolt lines up with the space between the frame and bed. When you lower the truck with the leaf unhooked, the end of the leaf will get closer to the bed of the truck.