Need help with no spark

Well, there ya go. Sounds like it was in the trigger wire connections from the distributor, since everything else checks out OK.Those issues are the hardest to find. Congrats!

BTW, to add to the notes on the voltage drops Karl reported....you had 7 volts across the ballast and 3 across the coil. With a typical MSD Blaster 2 coil primary resistance of 0.7 to 0.9 ohms (spec is 0.7 ohm but there are connection resistances), then those drops work out OK for an OEM type ballast, which is around 2 ohm hot after 30 seconds or more of heating. The resistances given in the chart in post #24 are COLD ballast resistances.