Ford modules aren't quite as unreliable as Pertronix, but they probably run a close second. The old "Dura-Spark" modules that were contained in an aluminum box about six inches square were pretty rugged, but the TFI (Thick Film Integrated) system that bolted onto the side of the distributor housing was so suceptible to engine heat that they finally moved the module over to an inner fender to increase its survivability. I don't think someone could run fast enough to give me either one of those systems!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!