And before someone mentions the adapter sleeve for the ball joint, I don’t recommend it because the ball joint is meant to wedge into the spindle. Adding the sleeve adds another point of flex
DoctorDiff also sells the ball joint adaptors for his kits for folks that want to retain their small ball joint UCA's.
I also don't like the adaptor there, BUT, it really isn't a point of flex. It's a taper lock, just like the ball joint, and functionally it isn't going to add any flex and it isn't any less strong than using the smaller ball joint to begin with.
It does cause some issues with how ball joint nut engages, and that's a better reason not to like them. But realistically people have been running them for quite awhile now, so from a safety perspective I'm not going to say they don't work or will cause problems. Me, I'd still switch to the larger ball joint UCA's.