Sportlines will slam your car pretty good. The two inch drop is as advertised. I put them on without replacing the shocks and struts. I have some junky Sears/Monroe pieces which probably don't do the springs justice. They really help cornering but the ride is definitely rough. I got them for free so I really can't complain but if I were purchasing new springs I'd probably go with something a little less harsh. If you're over....say 25, you'll probably end up with back pain by the time you're back from the grocery store.