hey mate I haven't done it on my patrol but on my old commodre I did. get a nice size hammer and knock broken studs in if sheared close to brake disc take off disc and belt it then or use a pin punch. the new studs the splines will fit into the mount as it has matching groves put it in then wind on the nut and it will pull the stud into place and mate up nicely. easy job mate you'll be right