Location of Oxygen Sensor for 1998 S-10

Hello. I purchased a 1998 Chevy S-10 4 cyl. last year from a private individual. The guy had taken off the Catalytic Converter and in doing so also removed the Oxygen Sensor. I have put on a Catalytic Converter but I am not sure where the Oxygen Sensor needs to go. I need to do this for my NYS inspection. I found the plug in, I think but I have no idea where the sensor itself is supposed to be put after I plug it in. Any help you are able to give me would be greatly appreciated. Thank you in advance. George

On my 92 blazer the o2 sensor is located just before the cat convert beside the trans pan if tat helps.

the cat should have a pipe 12"-18" attached to the ass-end of it. the actual converter and this pipe should be one piece. the 02 sensor goes in a hole in the begining- middle of the pipe section. the sensor will point toward the driveshaft once installed.

pick a spot, just behind the cat, thats where it goes, rdfirbird said its suppose to face the drive shaft, but thats incorrect, ive been under quite a few of theses trucks, and also under my personal one plunty of times, they point in any given direction as long as the sencor plug reaches you are fine