Idler arm bushings can be a bit of a problem. Sometimes the bolt won't pass up and out due to exhaust manifold interference. Sometimes by pulling the lower bushing after removing the nut, then cocking the bolt sideways and tapping out the top bushing with a punch, you can get it out.

If not, cut off the top of the bolt and put the new bolt in from the bottom up. Either way you put the bolt, you will have to tighten the daylights out of it to take out all the slack. The nut will be so tight that there is no chance that it will come off.

The front shocks are struts. You must have a way to support the lower control arm to change them. The support must be adjustable such as a floor jack so you can get the strut in position. Also there is a plastic clip for the ABS Sensor wire and brake sensor wire. Pay close attention to this and get it all in position correctly so as not to damage any of these important connections.

The ball joint is pressed in so you will need a press tool to change it.

Good luck,