I had a Magnaflow muffler with custom 2.5" tubing on the car for about 5 months, I hated it, it was too loud, dronded and rattled, the performance was the same or worse.

I changed to the Mopar, it's the best mod yet to the car, the sound is pretty close to stock, only a little louder, not much.

I feel the performance is better, a bit more low end torque.