Hi, First; I wouldn`t even consider changing the bushes in situ., and IMHO with the benefit of hindsight, I would buy new lower suspension arms with the new bushes installed.
An MB bush kit; (4 bushes, some new locknuts, a few washers , spacers etc) will cost over £100, and new complete arms are only £60/£70 each from I think Europarts .
Jack up, make safe, remove wheel, Use coil spring compressor to take the weight off the arm, disconnect the shocker from the arm and disconnect the lower susp. arm ball joint. Disconnect the rollbar droplink from the arm. (disconnecting the trackrod makes this easier) Support the hub to prevent brake pipe damage.
Then undo and remove the 2 long bolts that run through the middle of the bushes. ( I had to saw the front one when it was half out because it wouldn`t clear the intercooler, but yours is probably non turbo). The arm will then drop to the floor. The spring may stick in its top perch. If it does- leave it. Getting the bushes out is a pig of a job; chiselling, heating, rubber exploding etc. and it needed our 20ton power press to shove the new ones in , so best avoided.
If the lower ball joint to arm nut is very hard to undo; then the ball joint to the hub nut may be easier, but this nut can only be completely removed after the bush bolts are removed and the engine side of the arm is swung downwards.
Hope this helps. It`s not rocket science, all you need are some good ring spanners, a splined bit for the drop link and plenty of WD ;the best of British .
