Heart-Throb from jc whitney has a bolt on dual cat-back. It has a Y that splits into 2 tailpipe mufflers. Any other dual is custom made and dual tailpipe only.
Canadian, Just as fast Eddie said... JC Whitney sells a dual cat back system. Once I get mine installed I'm gonna try & make a sound clip. Here is a link to the exhaust. Shops around here wanted to charge me $300+ to custom make duals for me & I would have had to relocate my spare. Others have found people to bend around the spare...
The only side-to-side split dual kit that I am aware of is the Heartthob. I think Gibson has a split dual kit for the '01-'05 but both pipes exit on the passenger side.