Wheel bearings for Pentagram wheels?

[scott s]

I'm trying to figure out what bearings I need to run the Pentagram wheels on my '75.

The wheels I have were once on a '75 XS500, but I don't think all the bearings will work on an XS650, specifically, the rear.
I picked up a disc brake swing arm, caliper, axle, spacers, etc. Not sure exactly what year it's from... '80-something.

For the front, I'll be using the stock '75 front axle, spacers, etc., so that ought to be a straightforward swap. So... All Balls 25-1334, or re-use the bearings that are currently in the wheel if they pass inspection, right?

Are the rear wheel bearings the same for all XS650 models, disc and drum? I'd need All Balls 25-1357, right?

 

[scott s]

It appears that the rear axles are all the same, but that brings up the question of wheel spacers, front and rear.

I'll definitely need to swap over the spacers that go inside the wheel between the bearings. Both front and rear, right?

And it appears that there's a different spacer for disc brake wheels and drum brake wheels?