METCO Saleen Supercharger Pulley 3.00", Fits 2005 & Newer Mustang GT Replace the original 4.00" pulley on your Saleen supercharger with our precision-machined 3.00" pulley for ten additional pounds of boost. Our 6-rib billet pulley is CNC-machined for exact fit on the supercharger's 4-bolt pulley flange, and after machining the pulley is black anodized for long lasting surface protection. This pulley is also available in incremental sizes as small as 2.80". These pulleys are also listed in this section.