Check rockauto for moog brand. You can get just the ball joints or u can get the whole control arm with ball joints. I'd get the complete arms so you'll have new bushings. Theres also new strut bar with bushings too.
Auto makers don't see a big need to stay fully stocked on parts for vehicles they sold more than 20 years ago. Third party / aftermarket vendors are more likely to have active customers with such older models. It's more a matter of economics and corporate priorities than quality.