Ignition Coil ?

Hello,
I want to convert my 71 Valiant/170 CID from points to stock electronic Ignition.
Question: Will it work well with the stock coil or do I need a newer one? And
if I go with a Pertronix FlameThrower coil with 3 ohm primary res can I throw the
ballast ressistor away ? I hope you can help me out.
thanx in advance
dimagg