Thanks for the info guys. I have a couple more questions...

Is it possible to start the car without the plugs working.....it's about 85F today. Probably depends on how much compression the engine has.....if the valves are okay, how long should I crank before the engine would turn over?

I also noticed that the connector wire to one of the resistors blew off when the glow plug went bad. Could this be the problem? What function do the resistors play in engine starting?