Banks Ram-Air Intake feeds your Chevy/GMC gas engine cooler, denser, outside air for greater power and fuel economy. Its performance is extensively tested and validated: in the computer, using Computational Fluid Dynamics software... on the flowbench... and later, on the vehicle. Let the others build and ship: Ram-Air's performance is proven, again and again! Note: This product does not fit 2500 or 3500 pickup trucks. Banks Ram-Air for Chevy/GMC V8's.