SLP Performance - 05-07 Hemi Charger/Magnum/300C "Loud Mouth II" (modular); Catalyst-Back Stainless Steel System Also available from SLP is the stainless steel, Catalyst-Back Modular Exhaust Systems for the Hemi powered 2005-2007 Dodge/Charger/Magnum and Chrysler 300C. It is available in Loud Mouth™ and Loud Mouth II™ designs. Thanks to the modular design, either resonators or mufflers can be ordered individually and interchanged seperately. These systems provide a noticeable performance gain and were designed using SLP's innovative modular technology. This enables consumers to change the performance and noise-level characteristics by switching from our bullet-style Loud Mouth™ resonators, to our quieter Loud Mouth II™ mufflers, in order to suit their individual requirements. They feature: stainless steel, mandrel-bent 2.5" tubing; polished Loud Mouth™ resonators and Loud Mouth II™ mufflers with SLP's logo embossed in the body; integrated PowerFlo-X™ Crossover Pipe; double-wall polished tips with SLP's logo; easy, bolt-on installation and SLP's Lifetime Warranty. All hardware and Installation instructions are included.