Pertronix 1381a
If you want to remove the resistor you'll need to get a low ohm coil, Pertronix 45011 is .6 ohm
I kept my resistor for awhile, then when I did an engine swap decided to eliminate one more piece that could go bad.
Like said above, budget for a replacement Pertronix Igniter to have in the glovebox. I keep an extra one and a set of points in a bag in the car.
And I love how the Pertronix performs.