LBJ needed for Disc Brake Swap?

The lower ball joints bolt to the spindles and those bolt patterns differ. some are threaded holes where others and drilled through and nutted also. Either ball joint stud does fit the hole in all the lower arms though.
RedFish, thank you
I was thinking the lower arm when I read his question. That's why I love this place, you can learn something new almost everyday. Thanks again RedFish