Just a bit more background.
Car had been running fine for some time, but after having the work done to upgrade my fuel system and swap out the manifold to an OE one ported by SD performance, the car became hard to start cold and then last Saturday would not start at all. I initally found I had no spark and started tracing back to see if I was getting power to the coil.

I did some more testing today and the wire that is currently running to the coil (the one spliced into the choke power) is getting 12v when the key is in the run position, but when cranking drops to less than 9v. Since I am running a pertronix II does it always want 12v or should it at least crank over with 9v? Just trying to see if this issue is maybe the coil itself.
Thanks!