Stanglover which Pertronixll should I get their a lot of different types one say's for ( Auto lite) it a stock distributor I got now
Sorry for the delay getting back on this.
The Pertronix Ignitor II part # is 91281 for Ford V8 cyl. I don't have a part number, but the coil is a Flame-Thrower II at 45,000 volts. The P II is red whereas the original P I is black. Both will work fine. However, the P II should be run on a full 12V. I believe the P I can run on resisted voltage, but check on that. Pertronix make a relay so you do not have to cut the pink resistor wire, merely bypass it. Makes for an easy install. Wish I'd known about that when I did mine! Do NOT buy the Pertronix Ignitor III, Good electronics, bad construction.
Is your points plate grounded!!! Small bare copper wire which you can just see in the pic. Very Important!
This is for the STOCK Autolite/motorcraft distributor.
You may, once you have found the real issue for why it won't run right, need to recurve that distributor for optimum timing. We can deal with that later.
Here's a pic of the P II. Sorry it's not a clear shot, but you can see what it looks like.