http://www.google.com/products/catal...ed=0CEMQ8wIwAw
try using one of these to eliminate parts of the wiring in sections, carquest sells them locally for less than this price. if all of the components test ok but you still have no spark then it could be a crappy wire somewhere. if your buddy has the fancy snap on scope then he should be able to tell if all of the teeth on the tone wheels are spaced properly without taking anything apart.
i have been fooled myself by wires that have good continuity with a meter but only have one strand still touching so it's lost as soon as the circuit is loaded