New Moog lower ball joint.  Moog is a premium part.  Front suspension ball joint fits factory front lower control arm.  Fits either side, LH or RH.  This is Moog's "problem solver" grade, which is improved for better lubrication.  Sold individually.  Fits the following:

70-02 Camaro (all models)
70-02 Firebird/Trans Am (all models)