For use on 6 or 8-cylinder engines with two, three or four coil packs.

The mid 1980s were the beginning of the end for distributors in regard to new cars. The Buick Grand Nationals started using coil pack technology while many other GM vehicles were using dual tower coil packs sometimes known as Waste Spark systems. When Ford moved to the 4.6L Modular engine in the '96 Mustang, there were two coil packs with four towers each set up as a Waste