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I have a 91' L98 and I'm replacing the front Y pipe with one of these from madvet. I was trying to think of anything else I would need to replace while it was up and I thought about the O2 Sensor. I have the single wire O2 sensor that connects to the original Y pipe. But, I was thinking that the pipe that I ordered will not have a hole in the Y pipe for the sensor to screw into. What should I do about this O2 Sensor? Is there anywhere else I can relocate it, or do I have to drill a thread in my pipe? Is there any diffrences between O2 sensor if I buy a new one?
Thanks.