That thing got a hemi? Then make that 4.7-Liter sing with a Flowmaster exhaust. The Flowmaster American Thunder exhaust system is a cat-back, bolt-on mod for the Dodge Ram (part # 17424). You get a 50 Series muffler with 3" piping through and through. Expect boosted performance, better sound and a sweet look that only Flowmaster can deliver. Make sure to listen to the sound clip at the end!