stockxr Banned 123 Member For: 17y 3m 9d Gender: Male Posted 09/06/09 12:43 PM Share Posted 09/06/09 12:43 PM I have a stock exhaust, and am awaiting a 3'' or 4'' xforce cat. my question is.....-would a 3'' cat bolt on-would a 4'' cat bolt on, and what is involved it the two if there is any thing involved??? thanks. Link to comment https://www.fordxr6turbo.com/forum/topic/58420-please-explain/ Share on other sites More sharing options...
BAman Member 133 Member For: 18y 6m 25d Gender: Male Location: sydney Posted 10/06/09 01:39 PM Share Posted 10/06/09 01:39 PM they don't bolt on, an exhaust shop has to make up a flange and Y piece so it can hook up to the standard system. Link to comment https://www.fordxr6turbo.com/forum/topic/58420-please-explain/#findComment-888930 Share on other sites More sharing options...
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