Automatic To Manual Shift Knob Adapter Kit For Corvette C5 Gear Auto Lever for Chevrolet Corvette New Sickspeed Auto to Manual Shift Knob Adapter. Engineered to be a perfect fit for your OEM Corvette shift lever. Designed to work seamlessly with most Sickspeed knobs. Shift Faster! No more push-button, just push down on the knob to shift gears. Installs in seconds!