You may have a tough time finding a replacement wheel without spokes. I believe the 250 Suzuki V-twin from Australia had what you want.
You might just want to stick with spokes but you will have to buy a complete set, they are not sold separately. Here's the kicker..........
a while back I tossed out almost a complete set for the rear that were gathering dust. If I had them now I would have sent you a dozen to play with.