ball joints are rusted & frozen?

Hello,

To get the ball joints out you will need to use a ball joint press.
The lower ball joints will come out of the bottom
If these are seize and you cannot get it out with the press, you can use heat on the knuckle to expand the metal, and apply pressure with the press.

Here is a helpful article:

https://www.2carpros.com/articles/how-to-release-a-ball-joint

I have attached diagrams for your reference.

Please let me know of any questions.
Thank you.