This Flowmaster® Force II cat-back exhaust system fits all 2005-2007 Ford F250 and F350 Super Duty trucks with either the 5.4L V8 or 6.8L V10 engines. The 3.00-inch mandrel-bent stainless steel exhaust system features a 70 Series™ "Big Block II" performance muffler for a mild interior tone and moderate exterior sound level. Perfect for trucks used for work or extended towing, this full 409S stainless system is engineered for maximum efficiency and performance gains, as well as a lifetime of durability. The system exits in the factory location behind the rear tire which is preferable when towing boats and trailers. The large tailpipe utilizes the factory hanger locations for a quick and easy installation and includes a large 3.50-inch polished stainless steel exhaust tip embossed with the Flowmaster logo. Comes complete with detailed installation instructions, all necessary hardware and is backed by our Lifetime Limited Warranty. Notes: Fits 2 and 4 wheel drive models and all wheelbases.