Designed for use in Delco 6 and 8 cylinder engines Designed for Delco HEI ignitions Spark Plug Wire Lengths: (2) 22", (2) 27", (2) 31", and (2) 36-1/2" Coil Wire Lengths: (1) 21" Corrosion resistant stainless steel spark plug and distributor terminals for maximum conductivity.Fit type: Universal Fit