I did not use anyone's manufactured 3" exhaust, because of the changes that were made to the rear end by the prior owner. However, I did buy/install TTI headers, and took the car to an exhaust shop to have a custom fabricated 3" exhaust made. I used Magnaflow mufflers, and 3" reproduction stainless exhaust tips. Of course, custom fabrication will typically cost more $$$ than a Summit (or other) system, but IMO it was worth it.