Looking for help ID'ing this hub style...

[Harpman59]

I got a really nice Invader from 66bullshit66 here and it would be great if he knew what it was from but, no dice. I need brake rotors, bearings and a spacer and knowing the intended make would probably make it an easier search for the parts. The info so far is that it was for a metric bike and the rim is stamped SUN USA 3-78 and DOT T 19-2.156
The bearings look like they'll be 42mm O.D. after I get the races cleaned up and will need to fit a 3/4" axle.
The rotor flange diameter is right at 2-3/8" (60mm?) and the 6 holes are spaced at 3-9/64" (80mm?) Anyone that can share info on the rim, and/or a good resources for any of the stuff listed here, that'd be great!
I'm in the beginning stages of chopping a '95 sporty, hard tailing it and using a bunch of 70's parts...

[Bandersnatch]

Sun metals? invader 19incher. swap out for whatever bearings you wanna run.

I believe those flanges are for a dual minidisk setup like a hurst airheart., .......they pop up every now and then. They're usually pricy.

[Harpman59]

Yeah, Mini's are my intent. I'm having a hard time finding 6 hole rotors that have a classic look. Lotsa floating racer looking ones

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[Harpman59]

Model identified...I think!

After some time at this keyboard, I believe I've found the models that this hub was made for, its either 60's and early 70's Honda's. But I'm not too knowledgeable on them. Also, I don't have anything like that to measure though so, is there anyone watching that has one of these and can measure the inner spacer length and axle diameter and get back to me? I'd also be interested in purchasing the parts. I need pretty much everything that goes in the hub except for #10, it's not used when setting it up as a dual disc. I'd also run the speedo drive too if one of those is laying around your shop!
This one is a 1972 Honda CB750K2 front wheel