I have a 2011 mazda 3 hatchback 2.5 and I need a CAT to past smog. I was wondering if the 2.0 CAT would work. Obviously they are 2 different engines. I have the corksport catback exhaust and have the racepipe. However it is just bolted in not welded. I would just need it to pass the inspection and then would replace it back with the racepipe.