Replace the springs. Rebuild suspension with quality bushings and steering parts, not cheap kits. Like you said, eliminate the offset shafts. Check with Bud’s to see if they still sell the HD shocks Donahue used to have, or also look at the Bilsteins through RCD Classics. If it’s a power steering car and originality isn’t important switch to a Borgeson power box to eliminate the sloppy power assist.