rear sway bar 8 3/4

That's an Addco unit. I have one on my 68 Dart conv and used to have one on my 68 Barracuda.

The pic doesn't show the frame and link on the right. There are 4 U-bolts that connect those two mounts in the center to the rear end tubes.

Do you have those parts?

Same part number for A,B,E bodies.