Sierra's 18-5480 Complete Ignition Conversion Kit is designed for use in GM Small Block and Big Block engines with a standard deck height. The kit contains: (1) 18-5472 Hi-Performance Ignition Coil, (1) 18-8803-2 Spark Plug Wire Set, (1) 18-5483 Flame-Thrower Electronic Distributor. Built with marine grade materials. Each Sierra product meets or exceeds the original equipment part it replaces.