Techically you don't need to remove shackle ends to install AAL, remove the ubolts and raise the axle away from the spring, the center pin needs to be removed and I would reccomend clamping the spring prior to removal of the centerpin, once the centerpin is out unclamp insert the AAL and reassemble.......Bushings should not need replacing unless they are overly worn which does not seem to be the case with yours...I believe I have the light front, which obviously in retrospect was a mistake. I'll measure that out tonight. Wrap is on fixed end. I'm calling today to AAL. Although I've never installed one and am unsure as to the proper method. Will I need new bushings, or do I not even need to remove shackle ends to put it in?