Ive just bought some heavy duty springs for the rear on mine. These are meant to be used for towing so give the same ride height as standard, despite being shorter due to being a stiffer spring rate. Search on Ebay or Euro car parts do them via phone (wether the forum discount applies over the phone, I never found out as I didnt bother to find out). I will point out that I havent fitted them yet but dont expect any troubles or a major increase in harshness/handling woes, in fact, it "should" reduce the inherent understeer a touch.
