i am looking to upgrade from my stock exhaust and have tried looking everywhere. i can find exhausts for the v6 coupe and the i4 sedan, but not the v6 sedan. i have looked on numerous sites and suppliers and am just not having luck. i want a catback exhaust with quad pipes if it is possible. does anyone know where i can find an exhaust or do i need to get a custom made to fit? also if i go with the one made for the coupe, would i just need a longer downpipe or will that not work? i cant find a blueprint for the exhaust system to see where the extra length is added in. thanks for the help