I just found you can buy the ball-joint tool I've made. Summit has 3 versions: one two threeDiy tools ftw. But I lack a drill press and lathe. Appreciate the info tho! Gotta get creative sometimes
For about $30, I'm going to buy #3 just to look at it. It looks like the strongest of the 3. I don't know yet if it's long enough for the Supra.