Many of these parts are still available
new from Performance Products, Pelican, AutoAtlanta, etc.
I know that this steering wheel bearing is still available at PP, plus you can get 15-20% off on their weekly specials if you time it right!
Do you really want to tear out the tank etc. in a few years if a used bearing goes bad!?
In my case for critical running gear parts - I'd rather replace new bearings, bushings, etc. now with new if/when needed, to get another 30+ years of service out of them - rather than buying someone else's problems!