o2 sensor for s13 blacktop sr20det

looking for an o2 sensor for a blacktop S13 sr20

Or

a reference to a site or place to buy them

I am pretty sure I am looking for a bosch 13385, or an 87 300zx turbo, (or obviously a used factory one for the motor)

please correct me if I am wrong or SELL ME ONE lol.

Thanks

in stock ! !

got one 20 bucks.