I have a 2007 Hyundai Tiburon w/2.7l engine. The check engine came on and I had it checked at AutoZone and it came up with code P0153. My question is where exactly are each of the O2 sensors located at so I can replace the right one. Also I'm getting the part from RockAuto but their parts only says upstream right/left and downstream right/left, which one do I order? Thanks in advance.