I Hear a Clicking Noise in my Rear Wheel While Turning

This means your rear axle knuckle is going out and needs to be replaced. You can order just the knuckle. Problem is that you can't install the knuckle on the shaft axle drive unless you have the right tools and only mechanics will have the right tools to replace it. It's better and mucheasier just to get a new axle drive assembly. Then you just take off the wheel, the hub, and then pull it out of the shaft. Once you swap it, just put the hub back on, and then the wheel, and you're done.