LCA pivot wiggles

You got it. Most of the aftermarket sway bars come with some kind of provision to add a tab. Hotchkis sells a tab that welds on that looks a lot like the stock tabs, if you plan to add a seat bar later it might be worth welding a set of tabs on now in the stock 73+ location. Take care of it all at once while you've got the LCA's off the car- stiffening plates, sway bar tabs, LCA bushings.