they are at the ends of each swaybar. very easy job, maybe 30 minutes to do all 4 ends (front and rear bar) and that would include jacking up the car. the addco ones need a longer bolt than the stock one, i think i used a GM alternator bolt which seemed to work fine. it was about 5 or 5.5 inches long, and 5/16" threads. I also got locknuts for it just as a precaution. I'd go measure the length again, but I sold that car.....

There is a kit (or so i've heard), that includes the bolts, but my local autozone just had the bushings.