@DarrenA ,
I realise that you are looking hard at the Ignition Module but if I had performed the work on this power plant, I would carefully remove the last component I installed, making certain to...HOPEFULLY catch an installation mistake. Then carefully inspect all the wiring for that component, and the component itself.
I read that you have eliminated fuel as the culprit; did you try to start the engine using starter fluid and it failed?
Is your coil output consistent or is it's output intermittent? There is a ballast resister on the coil that I have experienced a no-start when the resister had failed. The old wires for the coil can also be a potential issue...all corroded inside the insulation.
Is your battery's static measured 11.86vdc or higher. Check all engine bay grounds, ESPECIALLY the battery cables and connections.
Don't give up, you will figure this out