Well, after 2 months of going crazy trying to diagnose the source of rattling in the back of my car (96 imp) checking parcel deck, struts, speakers spare tire etc, I finally found the culprit. It appears that due to the twisting of the body (probably due to stiffer springs and driving at an angle up steep garage curbcuts) the lower portion of my rear window had seperated from the frame. For the last 2 months I have listened to this maddening sound. After resealing the window no more rattle. Has any one else had this problem? Thought I'd throw this out since many hace complained of rattling after installing suspension.