prolly exactly the same.....

I opted for gutting and drop in K&N.. one day..I'll steal the rice pipe Randy hasn't put on Frank and see if there'* any difference.

Just keep in mind that your exhaust pipes are currently stainless steel and there are no vendors making a ready made cat-back kit for our cars. So anything you do there would be costly or a trade to regular steel and the benefit for performance is not there. As zsaid earlier, for exhaust, you should start with a hi-flow cat. The muffler and pipes are not the restrictions. Unless you end up doing very major mods you will find that you won't outflow your pipes. A single-in dual-out muffler can be used to get the dual look.

On that same thought...you could probably find an SSE or SSEi system off a junker that would bolt right up and still be stainless with the dual look.