The studs for my wheel on my rear passenger side need to be replaced. I'm not going to do it myself, but what I was wondering is that a friend told me that if I'm going to replace the studs I might as well go ahead and get my gear put in. He said that you have to drain all the fluids in the axle and do a bunch of other crap, so since it's already going to be worked on that I should just go ahead and do the gear as well. Does that sound correct? Or is replacing the studs on my car easier than that? I have an 04' mustang gt. I would appreciate the help!