09. Next we installed the Rush mufflers. Rush offers these mufflers in chrome or black with four internal baffle options ranging from 1 1/2 inches to 2 1/4 inches. According to Rush, the sound of the 1 3/4 baffle is slightly above stock and the 2 1/4 baffle is its most aggressive and deepest/throatiest, but not as loud as straight pipes. We went with Rush's suggestion of the 2-inch which is a good overall baffle with a nice mellow tone.