Wiring help for trunk mount battery

Back when I wired my shut-off, the switch, to be track-legal, had to simultaneously cut both the battery and the alternator output., otherwise the engine can continue to run.
Your way can shut it off, but I don't think it would be track legal.
For the track; the point is not about cutting the ignition;
It's about disconnecting the battery so it can't start a fire after being shorted. But in a Mopar, as long as the vehicle is upright, the engine continues to run on alternator power.... so you have to simultaneously disconnect the alternator........ or rewire the alternator to go to the battery, instead of the ammeter.