[BR3W CITY]

You can get the Bosch 13444 sensors and pigtails online. While they aren't listed as oem for the trucks, they are the cheapest, most readily available heated-circuit 02 sensor on the market. The also use an easy-to-wire 4 pin pigtail connector which is much cheaper than the ls style (which on some ls configurations are different left and right).

They work exactly the same, and every parts store will have them. No special tuning or adjustments are required, and the wire in just the same. This is how most aftermarket harnesses will wire up hotrod-swap LS vehicles.