PSA. Replace your original leaf packs.
Replaced my oem leafs, u bolts, lower plates and shackles on my 2000 AC. Used oem spec 3/1 packs from ATS in PA. Everything I replaced came from them. Grand total $730 before shipping. Truck got a 1” lift in the rear (most likely just back to stock and my old ones were sagging). Ride got a little bit stiffer. Less body roll, a bit more feedback with the empty bed, haven’t hauled anything yet but I’m excited to throw my camper shell back on and load up my gear. New Bilstein 4600’s all around about a year ago. Feels like a new truck. If your truck feels soft or rear dances a little on bumps, this would probably bring back that sturdy feeling you want.
TLDR, old leaf packs shot, new ones feel great. Truck rides so much better, worth a day of wrenching.