[acshortt5]

The front ball joint isn't replaceable on it's own - you replace the entire arm. It's either a 3 bolt arm (1 for the ball joint, 2 for the subframe) or, if it's an R or diseasel it is a 5 bolt arm (1 for the ball joint, 4 for the subframe). Either are fairly easy to change but you will need an alignment doing following the work.

On the 5 bolt version some of the bolts are a PITA to completely remove/replace but from memory the nearside is ok, it's the offside which had that issue. Ideally you should replace all the bolts but the way they are set up the bolts themselves don't actually take much load/stress from the suspension movement so might be ok to reuse the ones you can't remove (without significantly moving the engine/subframe anyway).

The rear outer bushes are fairly easy to do but the inner ones are a lot more involved. Personally I've found the inner ones will last longer if you replace the outers early - if you let the outers go then the extra movement causes the inners to wear out quicker. Maybe it would be wise to obtain clarification as to which bushes the tester is reporting as needing looking at.