Complete Conversion Kit: All-inclusive set to effortlessly transition your 1949-1954 Chevy car or 1953-62 Chevy Corvette to modern front disc brakes while maintaining the original 5 on 4-3/4 inch bolt pattern., True Bolt-On Upgrade: No machining or additional modifications required, ensuring a hassle-free installation process., Advanced Braking Power: Features 11" diameter vented rotors paired with 2-1/2" single-piston GM type brake calipers for enhanced stopping performance, elevating your classic Chevy's safety and drive experience., Wheel Compatibility: Designed to seamlessly fit most 15" disc brake style wheels with its 5 on 4 3/4" bolt pattern, offering versatility in wheel choices., Noteworthy Exclusions: The kit is not suitable for straight axles or the 91032100 Speedway "Modified".