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'97 Exhaust System Whoes


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I hoping someone can answer this question. I have a used '97 ES300 that needs a new y-pipe, which includes the catalytic converter. I live in CT, the car was originally bought in Boston. Based on the VIN number, Lexus informed me that my car has California emissions. There are two different y-pipe configurations for this car, depending on if you have CA emissions or federal emissions. I'm finding it very difficult to find an aftermarket pipe for this car. Walker doesn't sell one, though the lesser know brands do provide one.

Question: What is the main difference between these two pipes? Are they interchangeable or not?



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