[Blas]

Do a resistance check of the coil. Check the MSD website for directions and specs. Any oil residue coming from the coil body? What position is the coil mounted in? Letting the car sit in the driveway and run or driving it will produce the problem? I assume you have checked all the connections and wire crimps. If you can reproduce the problem in the driveway, test the coil again (above) when the engine dies. You will need to do the same with the box, test again when engine is dead. You might also consider checking the ignition switch (if you tap power to the MSD's small red wire there. Is the small red wire still "hot" when the key is on and the car has stalled? Could be a internal issue with the ignition switch.