Oh, just look at the pictures! Look at the fiberglass seams on the body and the shoddy finish of the skin and moldings in the cockpit. Look at the edge where the canopy seals. See any structural attachment points for the canopy? Compare to a real airplane [1] and see if you can spot the differences.
1. http://www.airforcetimes.com/xml/news/2009/01/airforce_pilot...