SuperATV makes a good windshield for these. They offer a half, full, and full tilt out. They also make a rear full windshield as well.
As far as enclosures go, DFK makes an amazing one that includes heat, wiper, and washer as well as removable doors that have slider windows. The windshield is safety laminated glass, and is a full tilt out. They are pricey, but VERY nice.