Flowmaster Header-Back Exhaust System 409S - Dual Rear Exit-AmeriCan Thunder - Aggressive Sound - 2-1/2" Tailpipe 10234C Features a billet radiator style

Features a billet radiator style neck

and less accurate shifts in manual-equipped cars

Shifter keeps car locked in gear and keeps the tension off all rear internals

1-1/2 in OD

1921 Q-Jet Rebuild kit

Flowmaster Header-Back Exhaust System 409S - Dual Rear Exit-AmeriCan Thunder - Aggressive Sound - 2-1/2" Tailpipe 10234C Features a billet radiator styleHeader back System 409S Dual Rear Exit American Thunder(R) Aggressive Sound Fits 1968 to 1972 GM A Body with a V 8 engine. For the person who is looking for a complete Header 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