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Package includes 2 tapered (upper) ball joint bushings and 2 hardened 7/16"-20 flange nuts.
Precision machined 4130 cr-mo bushings are used to install common '73 and newer 5 x 4 1/2" bolt pattern A,B,E,F,M,J Body disc brakes on '72 and older A-body UPPER control arms.
Also works with '72 and earlier B or E body drum or disc brake knuckles.
Must use '73-'76 A-body LOWER ball joints, available at any parts store.