A few questions hopefully some of you can answer. 1. Does changing the spark plugs to an aftermarket spark plug add any benifits. 2. does getting an aftermarket spark plug wire add anything other then looks. 3. does the Jacobs I.C.E. pack really add 15 hp to a stock KA24DE engine like their ad says? Does it add any hp at all? 4. Would it be better to purchase such an ignition if your car is stock or if it has mods?