The passenger side modification is much easier since the head requires no modification and the sensor requires only minimal work.
Here is where the USDM sesnor sits in the EJ207 head relative to the USDM cam:
Here is the sensor mounting hole relative to the threaded hole on the head. The hole must be moved toward the body of the sensor. I used the same method as I did with the driver side head.
A bolt with a smaller head was needed as the flange on the factory bolt was now too large and would contact the sensor body.
Centered over the hole now:
Lastly, the USDM sensor is slightly smaller in diameter than the JDM sensor so I used a thicker oring on the USDM sensor to make a good seal in the larger hole.