The aftermarket part can be as simple as a shim/washer behind the factory camber arm. To fix the flex under acceleration UP has lower control arms with bushings and bushings a la carte I think. Mountain Pass has adjustable lower control arms if you want infinite adjustment.
If you’re happy at stock ride height I think you can just adjust your rear toe in 0.2 and be ok.
I want minimal aftermarket mods to address the rear tire wear prob. I went N2itive (ghetto shims not for me) after I got my TP brakes with only 2-3K miles on the odo as a preventative measure. Obviously had a professional align mine on low to my exacting standards.
If I get 20K+ miles out of the T2s, I'm happy as a clam. Time will tell.