Calvert Racing Shackle and Bushing set for some GM cars that have Calvert Split Mono springs installed.
 
Fits: 1967-1981 Camaro/Firebird, 1968-1978 Nova/Ventura/Omega/Apollo with Calvert Split Mono springs installed.
 
Replace old worn out shackles with new shackles along with polyurethane bushings for the upper frame as well as the rear spring eye to reduce suspension binds and ensure a long service life. 3-1/4″ center to center. Includes required hardware. 9/16″ bolt.