# FS: Borla catback exhaust Mustang 99-04 GT/Mach1

**URL:** <https://forums.speedlife.net/t/fs-borla-catback-exhaust-mustang-99-04-gt-mach1/35012>\
**Category:** Classifieds\
**Created:** [September 7, 2007, 3:32pm UTC](https://forums.speedlife.net/t/fs-borla-catback-exhaust-mustang-99-04-gt-mach1/35012 "2007-09-07T15:32:23Z")\
**Posts on this page:** 1\
**Showing post:** 15

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**Author:** ![Dr.Stevil](https://avatars.discourse-cdn.com/v4/letter/d/da6949/32.png) [@Dr.Stevil](https://forums.speedlife.net/u/Dr.Stevil)\
**Post date:** [September 20, 2007, 7:05am UTC](https://forums.speedlife.net/t/fs-borla-catback-exhaust-mustang-99-04-gt-mach1/35012/15 "2007-09-20T07:05:48Z")

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_I think_ all that you’d have to do is modify the pipes for the IRS, but don’t quote me… been a while since I’ve been into stangs

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