Believe in the GM HEI ignition now?

I'm running the Magnum coil with my stock (but transplanted) ignition system, and I don't have any issues you all describe. In fact, I never have. That said, I do keep an HEI-swap in the tool kit because it's smaller than the OEM Mo-stuff. I'm going to swap on an MSD strictly for the Rev limiter, but we'll see how the rest goes.