If so, how much do they usually cost, including installation? I know this is something that would require just a ball park estimate, but that is ok, as long as I get some idea of what it will run me.
It's really hard to fabricate a true dual exhaust for a transverse V6. Most dual exhausts on those cars have one pipe to the catalytic converter, then it splits into 2 pipes under the car. They're not an actual dual exhaust.