the one pictured is the same as the factory peice, it just doesnt have the y collector on it. you can use yours and just cut them off where ever you please

 

the dynomaxx system follows the same path as the factory exhaust...they are 2 1/4 inch pipes that are one on top of the other in the factory location then the mufllers are smaller than the stock and the go side by side where the stock one was. the only downside is the tailpipes are both on the driver side but im sure you can get another pipe and modify it to curve back around to the other side.