I need to replace a ball joint on the front suspension of my Daewoo Leganza, I was going to buy a ball joint splitter but looking at the new ball joint I’m not sure if i’ll need one as it looks as though the ball joint will be held in by 3 bolts judging from the picture here

http://cgi.ebay.co.uk/Daewoo-Leganza-97-On-SUSPENSION-Ball-Joint_W0QQitemZ130321825602QQcmdZViewItemQQptZUK_CarsParts_Vehicles_CarParts_SM?hash=item1e57c93f42

Is this so or are all ball joints pressed?
t’was rivetted in & quite difficult to remove