Ej207 ver 6 o2 sensors?

I took on a rather large swap .... an ej207 ver 6 into a 2000 2.5rs.
now iv hit a wall trying to find out what oxygen sensors i need for the car...
iv been searching every night after work both online and at the parts store.

Trying to find ones that match my plug wires seems to be impossible.
do i have to change the plugs on the wires or is there a usdm o2 sensor that will just pnp?

part numbers would be appreciated!