Why buy multiple case pieces when you can buy them and get the job done! NO REASON! The OEM hubs have 2 rubber damper bushings and a steel center hub. You will need all three parts and a new center bolt and nut. You'll probably still need a bolt and nut, but this Delco rear front AC hub comes in three pieces that are easy to install. Just take a drill with a 1/4" bit and drill some holes in the rubber around the center tube. Everything just falls out! Check the suspension, they also rust a lot and are very unsafe if they break! The rear ones rust just as badly, but it's not a safety issue if they fail on the road.