I think you might need 2 separate systems fired by 2 hall sensors for the 182. It's not an even firing twin. W/a "twin" module, 1 cylinder will be firing the "waste spark" near BDC of the intake stroke while the other will be firing the waste spark near BDC of the power stroke.

You will need 2 trigger magnets mounted 180* apart for a "twin" ignition module. For 2 separate "single" modules you only need 1 trigger magnet but you will need to mount 2 hall sensors 180* apart.