73 and up disc brake swap, what lower balljoints?

Hello Gentleman!

I'm going to do a drum to disc (front) on a 64 Cuda. I found a 74 Duster in a junkyard, I plan to pick the upper control arm, spindle, caliper brackets, calipers, and discs. Should I bother pulling the lower balljoint?

I'm uncertain whether that's a unique part needed for the swap? It appears that I can buy lower balljoints for a 74 Duster at most autoparts stores. Will a 74 Duster lower balljoint play well with a 64 Cuda?

Talk to me like I'm approximately 16 years old (my peak for car knowledge)!