actually you will remove two bolts and two studs, one each per side, I was told to do the driver side first and then the passenger side, use the two nuts and double nut the studs to remove them, other option is the cut,drill,easyout method, Use a jack to support the crossmember and only lower it enough to get the spacer on then install new hardware. I started this mod thinking it would take a half hour then ran out of time, first bolt I started on was the most rusted bolt I've ever found on my XJ and yeah, it broke.