my 91 is starting to sag bad on the driver side... i recon the springs having 240k on them they are well used...lol i need to buy new spring for the back and replace them both... and i never really noticed it till i did the flip kit on the back. not so much with the 4 inch drop but the flip did it. i have checked everything and everything is fine just a weak spring on that side i am guessing.