Mopar ECU with points distributor?

yes, it will work. It will also extend the life of the points too as they are 'breaking' almost no current, will not get any arc transfer or burning. There was a motorcycle guy that used an ECU for his points ignition and said it worked great. The ECU really just amplifies the tiny switching current of the magnetic trigger enough to operate a high current (the big TO-3) switch. The TO-3 can almost be used by itself for this purpose but you might as well just use the 'points' at that 'point'.