So I am looking to install a GT350 catback on my GT and am looking for a bit of information before I get started. The GT350 midpipe inlet is 2.5'' - so I know that I will need a reducer to make it work with the stock GT cats. Is the stock GT piping (going into the resonator) 2.25'' ID or OD?
Stock exhaust diameter question
- Thread starter Synyster06Gates
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