Upgrade your classic ride with the GM 1971 Chevrolet Fullsize Engine Wiring Harness, expertly designed to simplify your installation and enhance performance. This high-quality harness is specifically engineered for small block engines paired with automatic transmissions (excluding T.H. 400). With modifications for use with a GM H.E.I. distributor, this wiring solution stands out amongst alternatives by ensuring reliability and efficiency in all your driving adventures.