Pls Help: Upper Ball Joint Too High?? 77 New Yorker

Hello Guys,
My dad and I have been doing some suspension work over the past couple weeks, and today, we were reinstalling the upper control arm after pressing in a new upper ball joint. We have the upper control arm back in and aligned, but the knuckle is too low to put in the thread of the upper ball joint. We tried jacking up the lower control arm, which the knuckle is attached to, but the whole car just came up off the jack stands. My question is: what do I do to raise the knuckle so...

Pls Help: Upper Ball Joint Too High?? 77 New Yorker