’68 lower ball joint vs ’72 lower

Hey guys,

I'm doing a disc swap on my '68 Polara wagon. I'm using '72 New Yorker discs. Just wondering if the lower ball joint is the same between the two, or if disc brakes used a different lower ball joint. If they're the same I'll use the ones that were in the car, they're fairly new.
Author: 70DartMike