The LM-1 kit utilizes fully mandrel bent stainless steel 2.5-inch tubing with minimal bends, minimizing backpressure. Custom tailored 304 Stainless steel tips are a perfect match to the Mustang’s rear fascia. LoudMouth kits use the factory mounting points and come with hangers pre-welded for quick and painless installation. The LoudMouth LM-1 kit saves 29 lbs. over the stock Mustang 5.0L V8 exhaust and is 50 state emissions legal.