general disc brake questions

So I’ve been “searching” for awhile and I think I have it down. I have a 1975 CB 550F.

If I want front dual disc brakes I need to find a donor with dual disc set-up that has the same shock diameter as mine(see fork tube diameter chart). I need to get the shocks and calipers. And discs themselves?

For the back, if I have drum brakes and I want a disc, I need to get a swing arm that has a disc caliper set-up AND that fits my bike?

Do I also need to find wheels that will accommodate the disc AND has the same axle diameter (also see the chart)? And I can just use spacers if I need to to get the wheel to line up?

If I’m making this too complicated PLEASE let me know because it seems complicated to me. Feel free to tell me where I’m wrong.

Thanks
vic

CB550K3 or F1 (F2)
All you need is a 550 disc, caliper, longer bolts and larger piston master cylinder.
If you have an early model without caliper mount on forks you can fit complete front fron late model, CB650, or just about anything with fabrication.
BTW, ythis should be posted in 1-800 help section

Well, I tried but...

I'll try again!

(Hopefully moved to the 1-800-help section)
vic