Hello there, Did the same a few weeks back, wasn't too bad. Have you checked out http://www.chryslerforum.co.uk/topic/4518-not-turning-over-general-starting-fun-on-28crd/? There's some bits on it there.
Yeah probably not worth it to be honest. 4 x Eibach Pro's at £160 is always gonna be better than OEM. 30mm drop, and less nose diving under heavy braking, plus flatter through the twisties… What's not to like! Just hope they arrive on time!