[Can't_C_Me]

I'm looking at buying the Borla Stainless Steel Cat-Back + "X" pipe exhaust system! But it says it's a Single split rear exit. It looks like any normal system beings sold to me for the C5. I need help understanding the difference between Single Split Rear Exit exhaust and other aftermarket exhaust systems being sold and the stock one on the V6! I have general knowledge on exhaust systems but never heard of this one!