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The pick up coil in the distributor is the only thing you haven't replaced, was the no spark condition present before you replaced all these parts or only come about after?
Double check the wiring circuit - check for continuity throughout the wires.
I had a similar problem to yours and it ended up being a broken wire within the sheath of the coil harness - about a foot from the coil. That was frustrating!
autozone website has a great duraspark diagnostic step by step
when I had that issue it lead me straight to the dizzy pickup being dead on my month outa warrantee rebuilt dizzy