I have been running Pertronix ignition modules in many vehicles for over twenty years.. I have never had a problem with one failing..
The big secrete about them is that most people don't follow the directions that come with the unit.. Many Fords and other brands come with a ballast resistor which must be removed.. My ski boat has a '77 Ford 460 which has a marine ignition, both of my Birds, a 56 & 57 have had Pertronix units since the mid '80's....
For many years I had a '59 F100, 292 V8, OD trans that I put a Pertronix in. That was in about 1991, never had any problems with it during the ten years I had the truck..
I just put a Pertronix on a '65 Corvair Corsa 140 I recently bought.. The Ignitor II coil said it was made in Mexico.. Not very far off-shore...
I have found that the average parts counter person can not be trusted to get the correct unit.. After four days of trying to get a unit for the Corsa, finally called Pertronix Tech line for the correct module and application, then told the parts counterman what unit to order.. A common problem that I have experienced before.