Sorry to bring this post back from the dead. But will these mufflers work on a Matrix/Vibe ? Well it has been done a High flow quite 2.5 exhaust. I will try to get pictures up soon. Its a work of freaking art. Its the High flow cat in to a Magnaflow resonator into a Magnaflow same side muffler that 90's into a Dynomax super turbo muffler.