There are three things necessary to have a running engine: fuel, spark and a sealed place for the fuel and spark to meet. We take for granted that the engine provides the place for controlled explosions, and the carburetor or fuel injection that provides the fuel is out there in the open for us to inspect. However, hat second part – spark – can be a bit illusive as we built our specialty car. There are hundreds of ignition products, but what do you really need in your application?