Bought my '04 Hemi w/25000 miles on it. The previous owner babied it. Now I have approximately 78500 miles on it and have only had to replace the front rotors. Excellent power althought new models have more. It pulls my trailer with no problem. This year I installed a Cherry Bomb Pro muffler to add a little "growl" to the motor. I kept the single factory pipe which comes out of the sidge behind the right rear wheel. Most people that I run into thinks that it sounds better than their own more expensive Flowmaster and Magnaflow dual exhaust set ups.