Alternator Rebuild Kits

Please correct me if I am wrong. I rebuild my own alternators and starters. What I find available for alternators are- front and rear bearings, brushes and their insulators and diodes. Output post insulators and condenser are not available. If other parts are needed you will need to rob another alternator. Starters are even worse.
https://www.aspwholesale.com/alternator-parts/chrysler-alternator-parts-early/capacitors
I can't vouch to quality. I may have bought but do not recall changing them. Generally I leave parts in unless they fail. Otherwise its a clean up and reinstall. Just repairing for me, myself, and I. I'm sure volume operations don't do it this way. Even the one local guy I dealt with just replaced parts (and that didn't work well!).