Personally I won't use a pertronix on my car, to me it's funny to hear peeps tout something as modern, then put it on a dizzy that is 100+ year old tech.
I realize the d-jet guys don't have a choice.
I would install a megajolt/e, even though it's more money and work. The programmable box is $150 to $215 depending on options and you will need a trigger wheel, sensor and the ford module and coil. If you're thrifty you can get most of those things from a scrapyard.
That said, on my new six will be running a twin plug dizzy (the Patrick unit) that I got for a song.
I believe it has a MSD pickup.