Ignition upgrade non-mopar

You can retrofit factory Ford electronic ignition similar to how tons of people have retrofitted Mopar electronic ignition to Mopars....
And that way you can avoid Chinese crap
Lots of newer 400s came equipped that way.
Besides 400s the 351m would take the same distributor. Rusty rat rod had a mid 70s Ford truck w/a 400 that might be able to guide you