leaf spring shackle won't come loose

Update - Job done! Less vibration and less squeaking on the test drive.

The stuck bushing I finally got out by taking out the leaf, cutting the bushing end off, spraying WD-40 under it, and pounding it out for a while.

The Dorman shackles almost worked. Lower shackle pin is the wrong diameter for the bushing.

The rest went smoothly enough. No issue at all getting things into place. For a stuck front eyelet nut I used the trick of jacking up the breaker bar end to loosen it.

Unfortunately it did not affect the left side sag. Oh well.