The Kelsey-Hayes Disk Brake Swap Thread
So I hope it fits. The smaller ball joint is a hardened nickel sleeve so you can put the bigger steering knuckle on. His "salesman"? I thought he was a one man show.
If he is sending the big calipers I dunno. Me personally I would go with a Kelsey-Hayes since your staying with the small bolt pattern. Besides the extra $225 for custom drilled rotors its a lot of money.