In 4 words "Pain in the ass" lol
Getting the old ones out is the easy part as all you have to do is loosen one of the droplink bolts on each side and the one bolt that holds the bush inplace on each side.
The bushes are split so will come off the arb.
Then put the new bushes back on.
Refit the clip that secures the bush then you will find out that the bolt will not reach the hole.
What i did was get some long nose pliers but even my grip couldn't pull the clip close eneough to get the bolt started so i cut some pipe and put it on the handles of the pliers and squeesed like hell. After neumers attempts and lots of swaring it eventually started lol.
Then you have to do it all again on the other side