Product Disclaimers: Fitment note: All applications are designed for small block V8 RWD only (except V6 Grand National). Lowering rate: Rear 0 inch. About this product Fits: 1964Ð1966 Ford Mustang Features Lowering: 0 inch rear Application specific Direct replacement OEM spring rates OEM style Òsilent blockÓ bushings E_coated finish Built to SAE standards Fitments Year Make Model Submodel Drive Type Engine Body Type Notes 1964 - 1965 Ford Mustang Base RWD 4.3L Convertible Lowering Rate: R: 0" | 5: All applications are designed for small block V8 rwd only (exc. V6 Grand National) 1965 Ford Mustang Base RWD 4.3L Fastback Lowering Rate: R: 0" | 5: All applications are designed for small block V8 rwd only (exc. V6 Grand National) 1964 - 1965 Ford Mustang Base RWD 4.3L Hardtop Lowering Rate: R: 0" | 5: All applications are designed for small block V8 rwd only (exc. V6 Grand National) 1964 - 1966 Ford Mustang Base RWD 4.7L Convertible Lowering Rate: R: 0" | 5: All applications are designed for small block V8 rwd only (exc. V6 Grand National) 1965 - 1966 Ford Mustang Base RWD 4.7L Fastback Lowering Rate: R: 0" | 5: All applications are designed for small block V8 rwd only (exc. V6 Grand National) 1964 - 1966 Ford Mustang Base RWD 4.7L Hardtop Lowering Rate: R: 0" | 5: All applications are designed for small block V8 rwd only (exc. V6 Grand National) 1965 - 1966 Ford Mustang Shelby GT-350 RWD 4.7L Fastback Lowering Rate: R: 0" | 5: All applications are designed for small block V8 rwd only (exc. V6 Grand National) 1966 Ford Mustang Shelby GT-350H RWD 4.7L Fastback Lowering Rate: R: 0" | 5: All applications are designed for small block V8 rwd only (exc. V6 Grand National)