I recently installed the axle back. I am running Greddy TDO5 18G setup. Custom Labree three inch stainless down pipe, test pipe and x pipe. No resonators anywhere in the system. I am running Z1's PG race exhaust without the baffle. I absolutely love it. I have to warn you, it is loud. My profile is z2turbo90 and it is curent. The car is still on jack stands. I havent finished installing the Pentroof complete body kit yet, and I live in Kansas. We receved a lot of snow. I love the exhaust.