I don't have a p/n for you, but here's a way to figure out what gauge wire to get for the boots. Measure the diameter of the 30 gauge wire (diameter of insulation) being used for the spark plug wire. This will be the diameter of wire with insulation that will slip over it. Use a wire gauge table to get a wire with ever so slightly larger diameter. Remember, a table giving wire diameters is for the wire, not insulation.