Petronix questions

Hey guys,
So i bought a 1361A pertronix kit for my dizzy, and i have a couple questions.
I'm not quite sure what to do about the coil, she has her stock coil on her right now, but i'm wondering if i should go with the pertronix flame thrower one.
If you think i should, there is also the 1.5 ohms vs 3.0 ohms debate.
I did a huge amount of research on the difference, and still cant come up with an answer.
Opinions?