Ford C4 1970-1981 Includes items to restore proper function to Valve body with conversion to Stick Shift/Manual operation. Features: This kit converts the valve body into a Stick Shift/Manual shift, which has no automatic shifts. This kit also has the option to be set up initially or converted back to automatic operation/shifting with minimal changes if desired. Raises overall line pressure. Firm shift performance. A wonderful addition to your OEM Classic vehicle, Competition, Off road, Pro-street or all out Race car when desiring full manual operation of transmission. Note: For C5 (1982-1985), Use 1971-Up C4 Valve body and filter. Installation recommendation: Experienced technician Transmission removal necessary: No