Upgrade your classic automotive setup with the GM 1967 Chevrolet Fullsize Engine Harness. Designed specifically for small block engines, this harness maximizes performance while providing the reliability you demand. Its compatibility with H.E.I. (High Energy Ignition) technology ensures improved spark efficiency, making this product a superior choice over alternatives. Say goodbye to complicated wiring and embrace straightforward installation and dependable operation, enhancing your vintage ride's overall performance.