Daytona Twin Tec Internal Ignition Kit - Standard 1005T Features two advance curve families that are adjustable to accommodate stock and modified engines Selectable multi-spark mode for quick starting and smooth cruising Four rotary switches for timing adjustments, single/dual ignition mode and rpm limit (100-rpm steps) Coil outputs protected against short circuits Requires coils with a minimum of 3 ohms resistance and low resistance spiral-core-type plug wires