Exactly. I don’t know why j par keeps talking about upper ball joint spacers since you asked about the lower control arm.
The lower ball joints have different bolt spacing on the earlier drum spindles, but you just buy a disk brake lower ball joint, no need to change the LCA at all.
you're correct I knew there's something you had to do if someway the conversion to make it easier and I figured if I just babbled some stupid crap out someone like yourself would come in and make sure it was corrected thank you.