I ripped off the exhaust on the car last night from the muffler back, because Im replacing it with larger exhaust. Well stupid me I know I measured it all out at one point in time and for some reason when I ordered it I only order the tail pipes thinking everything in front of the mufflers was 2.5". Went to mount the new mufflers and its only 2.25".... Its 2.5" at the collector and reduces down with in 6" of the collector to 2.25". So now Ive got my car sitting with no exhaust 2 weeks before the car show.. Pretty typical for me to tear it apart... Got the rest of it coming, just gotta wait.