I give 3 stars because they sent me the wrong part. However, I have not used the part that was sent to me and I like it. They sent me a Cherry Bomb Extreme muffler with an inlet and an outlet (I believe number 7426). I wanted to use a dual outlet after the muffler to make my car look like stock (came stock with an exhaust to the muffler and then from the muffler to the dual outlet). Instead I simply welded a single outlet to a 4 inch shroud. I like the sound and have felt a slight increase in performance.