Elevate your driving experience with the GM Transmission Controlled Spark Switch, designed specifically for the 1971-1975 Chevrolet Chevelle, El Camino, Monte Carlo, and Malibu models. This essential component optimizes engine performance by seamlessly regulating spark timing, ensuring smoother acceleration and improved fuel efficiency. Unlike generic alternatives, this switch is tailored to fit your vehicle's specifications, delivering dependable performance for both manual and six-cylinder engine setups.