Sorry to say it but, replacing ball joints is a waste of time and money. If they're not on the way out already, your front A arm bushings will need replacing shortly. Bushings are not available seperately and the only way you can get A arms is c/w new ball joints.

I speak from experience.

Redcoat Raceworks. Performance parts and custom fabricating for Contours, Mystiques and Cougars. Specializing in chassis and suspension parts. Custom end links, control arms, strut tower bars, engine torque braces, etc.