On an E-body rear, I've seen it done a few different ways.

1. Bend the ends that the end-links attach to inward so they line up with the leaf spring bracket.
2. Modify the leaf spring brackets so the end link attachment point is out farther.
3. Use offset end links so no sway bar or attaching bracket modifications are needed.

If the sway bar is going to hit the sidewall...that's another issue.