I have them on the malibu now. Compared to the stock set up their is no comparison. The only issue I have had at all is they drop the front end enough that I have to get new wheels with different offsets. However, small price to pay to get the right stance anyway. Heck, good excuse to get more new shiny parts.
Oh, did I mention the other upgrade- brakes. Stops much better now. I can give you some times from our autocross event in two weeks, stand by.