Departed 2 days earlier and delivered about 40 minutes before dinner. Told my wife I would wear them and came home before dinner was ready. A PB blaster can, a #19 wrench and a rubber mallet were all I needed. I didn't even lift my 2015 Tundra, just crawled under the bed of the truck, sprayed the nuts with a blaster, used a wrench, and loosened the nuts with a rubber mallet. They quickly dispersed. It is not necessary to remove both U-bolts, just loosen one side, loosen the other side, remove rubber stops, insert, tighten, done. I've even had time to drive around the neighborhood quickly and couldn't tell a noticeable difference in driving performance. I can't wait to tow my rig with them. Update: Towed my trailer with no problems, ride was ok, no squat, no problem. I haven't used a load balancer and probably never will again. I hated using this thing. Just connect and get started.