What wheels fit 78 KZ650?

I think the previous owner put KZ550 wheels on mine, 16in rear and 19 front. It uses a bigger rear axle, which means different swingarm to accommodate, but I have a swingarm for both the bigger and smaller axles.

I'd like to go with a 18rear and 19 front, or even 18/18, not really that concerned there.

I think I'd rather have spokes, but mags will work if it's an easier swap. I also like a pretty beefy tire front and rear.

Are there any 18/19 setups that are direct swaps, preferably spokes?


Pic if anyone needs/wants

There was one KZ550 that had an 18" alloy wheel with drum, that's what I've got on the back of mine. If you wanna swap completely to spokes, you can use the wheels from a 650B.