It actually has an exhaust setup from the cats back, that I didn’t put in, but came with the car when I bought it. Welded Thrush Exhaust. How I plan to do this would be to keep the cats( Keep the cats so that I still pass emissions testing), just cut off the Thrush Mufflers welded on and continue the exhaust all the way to the rear bumper. Keep in mind the mufflers are right at rear axle. One last thing is the exhaust right now actually a true dual.
I do not have a Y-pipe to this dual setup. True dual from the headers back