Flowmaster American Thunder Dual Exhaust System - 1998 Ford Mustang, GT/Cobra 4.6L 56-1421 and air cleaners

and air cleaners

Burnishing: Cold working the surface of the Babbitt eliminates micro-fissures that can lead to fatigue failure

1966-1972 Chevrolet Caprice

Proper installation is the responsibility of the installer

Flowmaster American Thunder Dual Exhaust System - 1998 Ford Mustang, GT/Cobra 4.6L 56-1421 and air cleanersFor the person who is looking for a complete Cat back dual exhaust system with an aggressive tone. With easy fit in mind, these systems are mandrel bent for maximum performance and include specially selected mufflers. American Thunder systems deliver a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. Like all Flowmaster systems, the benefits include improved throttle response,