Diagnosing Distributor - No Spark Chase

Hey everyone, I'm chasing a no spark problem and I could use a little advice.

1973 duster with a 67 318.
Factory electronic ignition.

I was moving it a few days ago to make way for my tenet's project and it kept dying when I reved it. I could re-start it and idle down the alley but that was about it. Then, nothing. Now its got no spark (tested with an inline spark tester). I've got power at the positive terminal of the ignition coil and after bench testing the coil I don't think that is the problem. It seems like the next gizmo down stream is the distributor. Is there a good way to diagnose a distributor in this application? I didn't see any obvious signs of damage to the rotor or cap.
Thanks,
-Alex
be sure the rotor is turning then try
a new ballast resistor. I had a ballast do the same thing on an old 73 challenger 318