I'm just going to unlock this thread long enough to toss in my two cents (um, because I can

)
I've installed two Pertronix and had zero issues: one in my '65 GMC 1.5-Ton with the 305 V6 engine; and the other in my Dodge M-37 that was a 24-volt system. Drove both for years w/o any problems.
I have no idea if either of the new owners of those trucks have had issues since.
BUT FWIW (Pat

) .... I am running original ignition set up (actually, the dizzy et al from my 216) on the '59 261 I have in my '49 now (and still on 6 volts) ... Hmmm, which, now that I think about it, is '30's tech in a '40's truck. Works great. I feel no need to change anything. I agree with Jerry -- Those guys back in the '30's and '40's weren't entirely dim

Jus sayin'
Ok, now back to jail with you all.