VMP Performance 05-08 Ford Mustang 4.6L 2.49in Roush M90 Keyed Pulley & 90mm Idler Pak VMP Performance Sale! from 25999 /per Qty. Add to Cart This item is either made to order or has limited inventory. Please reach out to confirm lead times if needed. VMP Performance 05-08 Ford Mustang 4.6L 2.49in Roush M90 Keyed Pulley & 90mm Idler Pak