All of the above are distinct possibilities. Vapor lock won't usually take effect until the engine is really warm; therefore, I'm betting either the condensor and or the coil. Putting the beast on the scope will show a breakdown in the height and/or the length of the firing line as it warms up. Or, if you don't have/don't want to spend the bucks (besides, how many of these kids nowadays can actually read and interpret a scope?), pulling the coil wire and holding it about a quarter inch from the manifold and cranking the engine, once it dies, will usually reveal the no-spark condition. Good luck with it!