Not with Koni's it won't. My springs aren't as low of a drop as Sportlines but they're pretty close and I have no issues after I got the Koni's installed...as long as you don't get a body kit, you'll be fine with a low drop for a daily driver.Prokit for sure...sportlines will ruin your everyday driveability in my opinion. also make sure you have means to adjust the camber after you do the change.
I think he was saying because you have the ss/sc springs your not gonna get very much, if at all, lower than you are now.i have a ltz, which is just a fancy lt. so the ss/sc springs i have on aren't stock. so sportlines will lower my car a boatload more then ss/sc would.