What parts to get off an early 90's Katana?

[Tombstones81]

Nephew bought an early 90s Katana 600 in early summer that needed work but never got around to wrenching on it.

Now he says he will probably part it out.

So I tell him I want first dibs when and if he does part it out.

So now my question is, what all parts should I buy off him to swap onto my 94 GS?

I know the rear shock.
and now as im typing this, im thinking the entire front end too? forks, think it has dual front brakes. (only seen it once helping him take it home)

Thanks