[sideview_180sx]

if you do not maim your original shims. you should not have to replace them. a runout gauge would help it setting the backlash exactly to spec. Impact gun or electric impact gun makes busting the ring gear bolts easier. retorque those to spec. If you have access to a lift and air tools. it shouldn't take more then like and hour maybe 2 at the most. and use loctite!!! Jspec has a diff cover with a hole in it because someone didn't use loctite and it blew off the cover.