Don't worry about that. When you install them you do the tops or bottoms first (can't remember), your axle should stay put while you change them out. When I installed my FT kit, I put the front axle on jackstands and never moved it. Just took the old arms off and adjusted the long arms to fit and was good to go. I installed the same 6" kit so if you run into issues PM me. Hopefully Full-Traction updated their installation instructions, there were some things that they left out. I had to relocate my parking brake cable rearward and cut off the original lower control arm brackets. I was also missing some hardware...