The actual resistance doesn't matter so much, and there are different published specs
Best thing to do is to inspect the reluctor/ pickup for dirt/ debri and damage, and set the reluctor gap, .008" (inches not metric) using a brass feeler which O'Reallys has
Hook the dist connector to your multimeter on low AC volts and spin or crank. It should generate about 1V AC
You should not have continuity from either wire to ground, and I don't recall, 200-400 ohms or so across the pickup. This value is not critical.
If it was running with the Mopar box, there's little reason to suspect a bad pickup
