I just wanted to share that I replaced the stock exhaust and resonator on my car on Dec 23. I had the shop use 2.5" pipe through an X pipe to dual Magnaflow straight through mufflers. The car sounded good with a nice low rumble at low RPM. The problem was that I had drone from nearly 1800-2500 rpm with the most irritating drone at 2K and the loudest drone at 2.5K in the RPM range. I took the car back to the exhaust shop and he made essentially a H pipe across the back right before the mufflers and nearly all of the drone is gone now. I have attached some pictures of the exhaust from this morning. I will try to get a video uploaded to youtube later for a sound clip.