Ok i have a 2001 GTP with a some heavy subs in it and the rear sags like a mofo.. I know w-body has springs that lift it an inch or so to accommodate for such a thing but is there anyone else out there that makes strut blocks or spacers for the rear of our cars?? 130 for springs inst terrible just wondering if there is anything cheaper??? I remember a while back some where in forum land there was someone saying that the springs w-body store has was from another vehicle?? I cant seem to find it now any help would be much appreciated