Clear as mud
The 4 pin resistor has nothing to do with the distributor, it's for the ECU
The older 5 pin ECU MUST have a 4 pin resistor
The newer 4 pin ECU CAN use EITHER 2 or 4 pin resistors
You cannot identify a 4 or 5 pin by counting pins. Some 4 pin ECUs have 5 pins, the 5th one is a dummy
IF you unhook the ECU and use a "points" coil, the wiring will fall into place and function just like the older points dist/ coil/ ballast with NO wiring changes, IE you can just leave the 4 pin alone.