Spark Plug Advice Needed

Hysteric,
Post #66....comes from NGK. You obviously know little about spark generation.
Production cars used carbon string high tension leads, often with a resistance as high as 30,000 ohms. Then they had the series resistance of the rotor tip gap ANNNNNNNNNNNNNNND the series resistance of the spark plug gap itself, both of which are millions of ohms. The spark is not going to be bothered by a little 5kohm resistor. There is also capacitance involved because the plug lead becomes a capacitor. If the leads are spiral wound, then those leads fit the definition of an inductor. So you have capacitance, inductance & resistance in the circuit, not just resistance.