What was the Orange-Box system doing?
FYI
I highly recommend that you do not try to run an E-core coil on a non-CDI system. They are designed for a much higher than 12volt input, and in my experience, do very poorly on 12 volts.
My best experience with coils is the big yellow square-top Accell Super Coil P4120889 and matching 1 ohm ballast resistor P5206436 . It will take all the abuse you can give it, and lasts for decades. In a pinch, you might be able to weld with it,.... lol. The catalog says " not recommended for engine speeds over 6500"; well my streeter runs to 7200 no problem with it, so IDK about the warning.
I used to run that Orange-Box with zero problems. But it is polarity sensitive.
I run my ignition system off a relay, triggered by the ignition switch, and grounded by a secret switch.