Interesting the digital box has some of the same issues the analogue ones do. I went thru a couple, and it was always when cranking over with a low or dead battery that killed them or the coil, or both. I have not had one of their digital ones, but switched to a digital pertronix box and have had great luck with it.
https://www.summitracing.com/parts/pnx-510Problem is, it won't do what you need....If it where me, I would switch to a Holley efi box, and just use what you need from it. Leave the carb, but hook up the NOS to it, and the Ignition box of choice, and it will do what you need....Although, I am not sure if you can program the ignition curve without a laptop, it would be the best way to go I think. Plus it data logs and has can bus...really nice setup with one of their dashes too.
