I might be selling my Z06 springs sometime soon, along with my sway bars and shocks. Basically my entire setup. But I’m not sure yet. I might just throw Penskes on it w/ the springs/sways that I have.
But FWIW alignment will be your 2nd biggest gain short of R-Compound tires. You don’t have to go AS crazy as me, and even mine only wears the fronts fast due to alignment. Front tires aren’t too spendy.
-TJ