Magnaflow's all welded axle-back and cat-back Exhaust Systems are mandrel bent from one hundred percent stainless steel and easily bolt right on to your GM F-Body for years of trouble-free performance. Each exhaust system has been dyno tested with proven results in increased horsepower and torque. Fully polished stainless steel mufflers create a smooth, deep tone. These systems are built so well, Magnaflow includes a lifetime warranty!