MagnaFlow Street Series Stainless Axle-Back Performance Exhaust System | Pontiac G8 (08-09) (16883)The MagnaFlow 2008 2009 Pontiac G8 Street Series Axle Back Performance Exhaust System brings enhanced engine sound and dyno proven performance to your 6. 0L, 6. 2L 2008 2009 Pontiac G8 with a healthy helping of our deep, resonant signature exhaust note at Moderate exterior and Mild interior sound levels. Thanks to its durable, corrosion resistant stainless steel design, this Pontiac G8 exhaust system will handle whatever tarmac you decide to leave