Axle pivot bushings

[twisted limb]

After replacing my right front ball joints I got a clunk when coming to a hard stop.I figured now that the ball joints tightened things up it showed something else was worn.I believe it is one of the axle housing pivot bushings.Question I have is there a metal sleeve thru the center the bolt goes thru?I see what appears to be one where the rubber is pushed back.Old posts on here say to put a jack under the half working on and lower enough to replace.Should I place a jack elsewhere and should the whole front end be off the ground.thanks