Standard 7" round sidemount bucket, English style instead of the goofy early Japanese style.
Mounting a 32 Ford light would be pretty easy. Bend up a heavy aluminum bracket, drill holes that match triple tree holes, drill holes that match bnucket holes. Paint or polish the bracket. Add stainless or polished brass/bronze hardware.
Here's how the sidemount looks installed, pre-respray...
Want a really easy swap? Go to Kawasaki and order a 1500/1600 Classic headlight if you want it chrome, 1500 Drifter if you want it black. You'll drop a few hundred bucks, but they use the same base mount...