Upgrade your GM vehicle's ignition system with the Michigan Motorsports Large Cap TPI HEI to 87–92 Small Cap Distributor Adapter Wire Harness. This comprehensive kit allows for a straightforward conversion from a large cap HEI distributor to a small cap distributor, enhancing performance and compatibility. The kit includes all necessary components: an adapter harness, distributor-to-coil harness, and coil power/tachometer pigtail. Designed for plug-and-play installation, it eliminates the need for wire cutting or splicing, preserving the integrity of your vehicle's wiring system.Constructed with OEM-quality materials, this harness ensures durability and reliable performance. It's compatible with a range of GM vehicles equipped with Small Block Chevy engines, including the Camaro, Firebird, and Corvette. This adapter harness serves as a direct replacement for the discontinued ACCEL 74170 F-body wiring conversion kit, providing a modern and dependable solution for your ignition system upgrade needs.