All my ball joints were riveted in place and the ones I replaced them with came with bolts to attatch the new ones. Give Rockauto a call, 10% discount for TDR members, they carry Moog which is what I used. It aint real easy to get the rivets out, I had to drill through the center then grind them flat and knock them out. You might as well do the control arm bushings as well while you are there.