well, i've seen people getting the '89 300zxt o2 sensor but do i get 2 of that of the same ones? i got a 96' 200sx bb and i know i need one for the front and back. which 2 do i get for the front and back? the one with the 3 wires goes to the back but what do i get for the front o2? any help or go search is welcome. thanks.