I think the first thing I'd check is does the coil fire at all. Sounds like you've tested that you have 12v to it, and you've replaced the ignition modual from your points convertion. If the coil will arc to ground when cranking it's almost certainly the rotor - a cheap and easy fix.
Heck, could be something as simple as a wet cap/rotor, though I doubt you were working on it in the rain.
Don
'01 22 Classic, 502/B1
And a bunch of other stuff
"If everything seems under control, you're just not going fast enough" - Mario Andretti