IÆm replacing the upper ball joint on my Trooper.

I found these two ball joints and need help deciding which to buy.

The first is a direct replacement:
[Linked Image]

The second uses the original base and just replaces the ball joint:
[Linked Image]
(I now you need special tools to replace these, you can barrow them from Autozone. But how hard are they to replace?)

Your help is much appreciated.

Jaime