Narith

Hey there fellow IS owners, so to get to the point, I purchased my car about two months ago and I was informed that it had the CEL on. The codes I pulled that day were P0037 ho2s bank 1 sensor 2 heater circuit low and P0057 ho2s bank 2 sensor 2 heater circuit low. So my question today after doing a butt load of research and still no help is, which o2 sensor would i need to purchase as in upstream, downstream, precat, postcat, all of that good stuff. For sure i know i would want to purchase the Denso brand, so if part number included that nice too! So thanks in advance and to anyone that could help me I would greatly appreciate it. Also, if you could text me other than replying to the thread that would be even better, 6782064590, thanks again.