Ford C4 All 1964 (Including Early '1965 Mustang) Includes items to restore proper function to Valve body with much improved drivability and durability. Addresses Soft 1-2 shift, passing gear spin-up, clutch chatter and soft shift to high gear. A wonderful addition to your OEM Classic vehicle. You will love how it shifts. Installation recommendation: Experienced technician Transmission removal necessary: No