i used them in my 72 dart when i changed over to disk, mainly cause i already had nearly new ball joints and control arm bushings. i figured that if they were unsafe, cass woud'nt be selling them. seems to work fine. dave.
You're kidding right ? Safety has nothing to do with it. Aftermarket will throw anything out there to make a dime. See Takata airbags, Firestone tires, and many more for examples.
In the case of upper ball joints, a long time ago some engineers determined that the smaller ball joint would not handle the added stresses from larger brake assemblies where higher weight / momentum required those larger brakes. Of course this was back when more owners drove their vehicles anywhere and everywhere. If your daily commute doesn't include a washed out dirt path or steep mountain side... Me, I still wouldn't dismiss or override the engineering.
