AFE: Silver Bullet Throttle Body Spacer GM Trucks/SUVs 99-07 V8-4.8L/5.3L/6.0L/8.1L (GMT800) 1.570" The kit includes CNC machined

The kit includes CNC machined 6061-T6  sway bar bushing brackets that are a direct fit for the included polyurethane bushings

Many people made custom block-off plates

2009 GMC Sierra 1500 Crew Cab/Short Bed 6

Unless you're new to the racing game

1999 PONTIAC TRANS AM V8

AFE: Silver Bullet Throttle Body Spacer GM Trucks/SUVs 99-07 V8-4.8L/5.3L/6.0L/8.1L (GMT800) 1.570" The kit includes CNC machinedThe aFe throttle body spacers create turbulence in the air flow at the point just prior entry into the engine increasing horsepower, torque and improving throttle response and fuel efficiency. Silver Bullet throttle body spacers are constructed out of durable 6061 T6 billet aluminum and using a unique serrated helix entry to create turbulence at the manifold while eliminating the annoying whistle found in other helix only throttle spacers. Emissions