Correct ballast resistor
The Accel Super Coil has a primary resistance of .7 Ohms
Similar to the MSD Blaster 2 coil
Factory Chrysler coil has a primary resistance of around 1.6 Ohms
Chrysler used the same ignition coil running there points distributors of the 60s/70s and a single ballast resistor with an .5 Ohm rating and that same part #ignition coil was used thru the mid 70s running the electronic ignition / ECU and a dual ballast resistor with an .5 Ohm rating on the coil side
Chrysler changed the Ohm rating of the dual ballast resistor to the coil side at 1.2 Ohms around mid 70s also