Dedenbear 2 & 3 speed CO2 shifters are engineered to make the low to high shift on 2 speed powerglide transmissions and the 1-2 and 2-3 shifts on 3 speed transmissions. Designed as a direct bolt on with no modifications required for the Turbo Action Cheetah SCS shifter and featuring large, oversize cylinders and high flow solenoid valves to ensure the fastest, most positive shifting units on the market. Simply bolt the assembly to the shifter, plumb the air lines, and attach two wires. All parts are plated for corrosion resistance and a professional appearance.