Will a 80' CB750 16" wheel fit my 74' Cb750?

Just as title states. If not what will fit my 74' CB750?

I've had a bouncy rear wheel for a bit now, finally getting around to fixing it.
Just been difficult finding a replacement 17" rear wheel that is true and straight.

Also recommend me a good tire size for a 16" rim.

Quick question (I know it's the wrong section). But I have a 2004 cb600, how much time and money would it cost to swap the front forks onto my cb 750?

16 were a common mod to early 750's back in the day but is a handling and suspension performance downgrade
you would need to get different triple clamps for sure and possibly extend the upsidedowners to retain good steering geometry and better that stock cornering clearance
a better upgrade is 37mm goldwing forks and clamps
why not just relace the rear with an alloy hoop and new spokes in 18" ?
dont ferget to balance wheels when a new tar fitted,mark the weights and keep an eye on them they like to get lost

1980 wheel will fit with your stock drum insert and your stock axle/spacers. I did the opposite swap....1977 rear wheel onto a 1980 cb750 custom to get spoked wheels.