The Edelbrock 7/16 to 1/2 bushing washer kit allows the use of stock or Edelbrock 7/16 inch head bolts with 1/2 inch bolt holes found on pre-1970 AMC V-8 engines. Intended for use with specific Performer and Performer RPM AMC cylinder heads, the package includes 28 pieces and provides the bushings and washers needed to adapt bolt sizing without changing bolt hardware.
Edelbrock 7/16In to 1/2In Bushing Washer Kit for Perf and Perf RPM AMC Heads On Pre 1970 AMC Motor