I like my Hotchkis Sport sways, kit P/N 22112. I got them cheap at Maryland Speed. The kit comes with everything you'll need.
The rear bar is adjustable but the front is not.
2016 2SS 6-Speed Manual... Magnetic Ride Control, Dual Mode Exhaust, Sunroof, Adrenaline Red Interior, Mylink W/Navigation
GM Red knee Pads
GM Black Front Splitter
GM Black Bowties