1967 barracuda rear leaf spring hangers

Still difficult to understand without a picture, but here goes. Rear leaf spring hangar is bolted to tail frame with two bolts, using nut plates inside it. Stock shackles are attached to those brackets with two nuts holding them on; one pin through the bracket and the other through the leaf spring. You remove the nuts and then remove one side of the shackle, then work the bracket off of the shackle.

Somewhere on this site there are free manuals that should show a diagram of that area.