i have eibach sportlines and kyb non-adjustables with 13" steel wheels on an 89 rex. It feels like my suspension is too harsh. the springs have about 20k on them, the rear struts are brand new, and the front shocks are old, but still seem fine. i checked them by pressing down on the bumper and rocking it. the ride is so harsh that its scary to go over 80 on the freeways. the freeways here are all bumpy and pebbley...(though i dont feel it in my parent's suv) so will upgrading to poly bushings help or any other suggestions/ideas? or is that just the price i pay for having great handling?