Ridetech 65-66 Mustang V8 Manual or Power Conversion Idler Arm Ridetech Sale! from 6000 /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. Ridetech 65-66 Mustang V8 Manual or Power Conversion Idler ArmThis Part Fits: Year Make Model Submodel 1965-1966 Ford Mustang Base 1965-1966 Ford Mustang Shelby GT-350 1966 Ford Mustang Shelby GT-350H