If you are asking. If they will fit, Yes. They will fit but they are not as stiff as your forged aluminum control arms.
They will work while you get new bushings and lower ball joints and get your originals rebuilt
now if you have 08 FE5 LCAs then. No they will not fit.
You must check this out closely.
In 08 Chevy changed the diameter of the lower ball joint shaft…and the matching steering knuckles, the ball joint shaft slides up into.
sincce you have the FE1 LCAs in hand, measure the diameter of the ball joint shaft. Comparing this dimension to the ones in your 08 Sport.