I have one of these. I could not find Lemförder arms for it, only cheapo ones. I could find decent (Febi) bushes but there was no way I could press them out with my cheap DIY tools. I think it needs a hydraulic press or expensive tools.
I did all the bushings on my Passat with the same tools so I'm not totally inexperienced but I didn't have exactly the right size cups and the force required was too great.