While it may have been possible to fit a standard clutch linkage around the LS headers, a hydraulic clutch will work in all applications. It’s not exactly old school, but it is purely mechanical and the driving experience will be the same. The Keisler kit comes with the throw-out bearing (technically known as a concentric slave cylinder or CSC), master cylinder, reservoir, and hoses. Also included is a replacement front bearing retainer to keep the CSC centered and to prevent it from rotating. Spacers may also be needed to ensure proper bearing clearance or cushion.