Hello, I have now built the eibach suspension. see here:http://www.motor-talk.de/t988029/f319/s/thread.html naja is really great with the 80/60 springs and the club-hard konis, but my back does not do that for the duration. in road traffic it goes still, but as soon as you drive a little more sporty off the public roads, it gets really bad. therefore I have now had my orthopaedic a recaro stühl prescribed by me (privately insured). so now I was today at recaro in kirchheim teack and I looked at a few models and can’t decide. maybe you can help me in matters of ergonomics (please only from experience) and optical. hang on two times (the two who have just agreed to me, price/performance, unfortunately have to pay the second yourself, I tried everything, even because of optical balance and correct attitude of the passenger, does not use anything, got only one on prescription) here sometimes numme r one (about 300€ the piece, leather costs on price), are slightly tight but top side and the horny, which have an integrated belt.