I have swapped front/rear CB650 wheels to/from CB550/CB500's. I know the front axle for the 500/550/650 is narrower than the CB750 (at least the ones that I've seen), but will a rear drum CB650 wheel swap in for a rear drum CB750 wheel?
CB750 Fender
I'd consider it rough. Lots of small dents/impressions. Might be a good one to chop up though.
I'd do $30 shipped to PA. It will probably cost more to ship that what I'll end up in my pocket. ;)