Another update, I’ve finally bit the bullet after my bushings wore out in the leaf springs and simply bought some new leafs. I went with Alldogs Offroad Broverland leafs because they have the only eyelet setup with bushings that aren’t polyurethane and looked stout with the right weight and height for my application. Install was easy, and with 3 degree shims and riding on prg middle shackle hole the truck feels quiet, smooth and compliant. No more driveline vibes, no more squeals. It feels like a new truck. While I was in there I swapped the brake pads and did a few other easy items while I had access.
Some pics:
Oh yeah, had a baby