Fuel, air, spark.
If fuels been ruled out, and air is abundant....try the cap and rotor. And get a petronix so you dont have to worry about the points

.
On a constructive note. You could also try spraying the cap (and maybe the dist itself?) with a water evaporator/displacer.
Has the car been brought "inside" to warm up yet?
Just throwing out ideas.
J
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'66 Mustang Coupe- AKA "Lenore" *on disability for a (long) bit*
'93 GT Mostly stock AKA "Fawkes"
Rice Haters Club Member #239
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