817585 For the person who is looking for a complete crossmember-back dual exhaust system with a performance sound. This system is mandrel bent for maximum performance and includes specially selected mufflers. American Thunder 2.5 in. systems generally deliver a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. The sound level will depend greatly on the engine and level of modification. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation. Features: Premium Quality Improved Horsepower, Torque and Engine Efficiency Delta Flow Technology Super 40 Sound Level About Flowmaster Flowmaster® is a household name, and for good reason. They've built legendary exhaust systems and mufflers for decades, and now offer performance air intakes, catalytic converters, and headers to give your hot rod performance to match the iconic Flowmaster sound. SPECS 2WD/4WD 2WD Automotive Item Grade High Performance Part Brand Flowmaster Emission Code 5 Exhaust Series American Thunder Exit Position Dual Out Rear Heat Shield No Inlet Diameter (in) 2.5 Material 409 Stainless Steel Muffler Part Number Kit Only Muffler Quantity 2 Muffler Series Super 40 Series Outlet Diameter (in) 2.5 Product Type Exhaust System Single Dual Dual Sound Level Aggressive / Moderate System Type Crossmember-back Tip Quantity Not Included Tubing Diameter (in) 2.5 UPC 700042027484 California Proposition 65 Chemical Name Chromium (hexavalent compounds) Nickel (Metallic) California Proposition 65 Required Yes Part Number 817585 EMISSIONS 5 This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations. TECH RESOURCES Instructions for Part# 817585 Warranty for Part# 817585 Fits 1967-1974 Mopar A-Body, such as Dodge Dart, Demon, Plymouth Barracuda, Duster, Valiant with V8 engine. Including convertibles.