15% GSC P-D Ford Mustang 5.0L Coyote Gen 1/2 Conical Valve Spring and Titanium Retainer Kit GSC Power Division Sale! from 76500 90000 /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. GSC P-D Ford Mustang 5.0L Coyote Gen 1/2 Conical Valve Spring and Titanium Retainer Kit