Possible dead Pertronix?? no start.
Well..........heh...........if you put 12V to coil, cranked engine, and have spark, then it "ain't the Pertronix----it's a problem with supply voltage to the igntion system
"Coil +" and the Pertronix is the same electrical point/ junction
Put a test light / meter on your coil + and see if you have and how much voltage you have with key in run
Then crank engine USING THE KEY and see how much.