My squrrily idea, just do sway bars?

I added just a sway bar and gas shocks to the 73 4-door. I also swapped out the LCA for ones with factory sway bar tabs. Some of the aftermarket kits have weld-on tabs that allow a factory bar to be used. Others have a tab that uses the lower shock bolt. IMO the bolt-on tab is not strong enough to do the job with consistency.

At the time I added the bar, I also cranked up the front caster to +2º. Results: Flatter cornering; sharper initial turn-in on corners; supple, well-controlled ride. If your bushings are in good shape, you should have similar results.

Good luck with your improvements.