This American Thunder® cat-back exhaust system is specially designed for the 1999-2004 Ford Mustang Cobra models with the 4.6L engine. The exhaust system is constructed from 2.50 in. mandrel-bent stainless steel and bolts directly to the back of the factory catalytic converters. The inlet tubes flow into a pair of large cased Super 40® shootout series performance mufflers. The 2.50 in. tailpipes are all mandrel-bent, use the factory hanger locations for a quick and easy installation and the mandrel-bent tailpipes are finished off with a pair of highly polished 3.00 in. diameter 304 stainless steel tips. The system includes all necessary parts, hardware and easy to follow instructions and is covered by the Flowmaster® Lifetime Limited Warranty.