Compatible with 1999-2004 Ford F-250 F-350 trucks Super Duty chassis with a V8 or V10 engine.; For the person who wants a subtle custom appearance with all the benefits that a Flowmaster® Cat-back exhaust system provides. S.O.S. (Single out side) systems are the perfect choice. Our Force II® systems delivers a moderate exterior tone and mild to moderate interior tone and are suited to customers looking for efficiency improvements without a lot of noise. The system is constructed from large 3.00 in. aluminized steel tubing flowing into a specially selected 70 Series™ Big Block II muffler™. The 3.00 in. mandrel-bent tailpipe exits out behind the right rear wheel with a slight angle cut at the end of the tubing leaving you the option of choosing your own style of tip if you desire. Especially recommended for towing applications. 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. Notes: Fits 2/4 wheel drive models on 133 in. 155 in. or 168.4 in. wheelbases.;