I’ve been reading your posts on lifting a 4th gen Explorer. I then realized you answered a question on the Ford Explorer club on FB. I put in a 3” lift and the Ball Joints are screaming, and my spindles are actually rubbing on my springs. You and several others recommended BTF UC arms. If you have any other information send it my way, but thank you for your input. I hope to have this all wrapped up in the next week.