So, I took a trip under my car and it looks pretty neat and nice down there.

But here's what I noticed about the exhaust system, 2 pipes coming out to 2 cats, then they merge into one pipe and that goes into one muffler which has the 2 chrome exhausts in the back.

Not much space at all in the trench they have to fit 2 pipes all the way to the back over the drive axle.

Would be interesting to see what the aftermarket designers come up with to increase exhaust flow.