I’ve owned this car for almost 2 years this August and for the life of me I have not been able to get this car to sit flat, i.e. not sag in the rear. I have replaced every bushing, removed every spacer, replaced the springs and shocks and still, the sagging continued. So I finally bit the bullet and replaced my front suspension struts with coilovers which allow for an adjustable ride height. Not only does the car sit level it handles better, especially squatting into a corner.