What brand are these? What kind of drop? If it's anything more than an inch, you'll hate your car if you don't buy quality sport shocks to go along with the springs. I'm sure you could find reasons to hate yourself for neglecting to install new shocks even if the new springs were stock- they're a wear item and it's a pain to get those springs on and off. You should do it right the first time and save yourself a lot of trouble.