8 3/4 axle shafts and housing restoration questions

I took my 8 3/4 rear apart and noticed the bearings were shot and the metal retaining ring holding the bearing in place was worn and also scratched the housing tube as well. Does the axle bearing and metal retaining ring ride on replacable inserts? If yes how are they removed? If not can the housing be sanded or machined down and the metal retaining ring be sanded as well or do they need replacing? Are replacement retaining rings available? What is the best way to remove the retaining ring and bearing assembly? Also what is the best way to remove the pressed in axle seal to avoid damaging the housing tubes?

Thanks