Stock struts... come on... replace them. Otherwise you're just going to bounce and porpoise down the road. You'll look like a dumbass, and while you might get used to it, your passengers are going to ride with you once and refuse in the future. What's the point of installing stiffer springs with much shorter travel if you're just going to leave the stock struts in there? Man, I've been there, and I know I was a douchebag. Don't be that guy.