Keep in mind as you watch this the Alarus/CH-2000 and the CH-640 share the same cockpit/canopy size.
CH-640 from a kit or scratch built
This fan site features the 2 seat Alarus/CH-2000 FAA Certified Aircraft and its larger variant the 4 seat Ch-640 Experimental Kitplane.
Keep in mind as you watch this the Alarus/CH-2000 and the CH-640 share the same cockpit/canopy size.