I'll bet that you have too much advance in the distributor. It can make the car hard to crank.
I know that the MSD system I had in the car sometimes just wouldn't fire. No apparent reason for it, it just didn't want to get out of bed I guess.
No more MSD crap now, just Motorcraft. The Motorcraft brain also will reduce the the cranking advance. If the voltage is to low, it doesn't fire.
Two factors important here, battery and ignition switch. All ignition switches can reduce the voltage to the ignition system when they are burnt. The Pantera switch was marginal at best even when brand new.
Something to keep in mind.
Don't give up you are almost home and you will be an expert when you are done. Poorer sure, but wiser.
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