im trying to redo my true dual exhaust and i wanted to know ifnybody knew what the origianl stock camaro z28 exhaust diameter was, im running a true dual under the axle and im tring to see if stock was 2.5 so i can chop of 2 at a junkyard.i dont have cash for mandrel bends and all that so figured it would make it easier for the exhaust shop if i brought those in instead of doing a million bends..thanks in advance