Installed on 2007 Nissan Frontier KC 4x4. Installation was simple and straightforward. Minor hiccup involving a bend between the muffler and tailpipe- this bend needed to be welded to the tailpipe or else the back of the system wiggles. I used a stick welder with 3/32 stainless rod 55amps DC+. Be careful not to burn through. Performance is improved, sound is mellow and much quieter than Magnaflow or Flowmaster. No hwy drone and very nice in the cab. This is a high-quality product and I feel has been worth the money.