I know that aerobob (who started that thread) and at least one other guy ran a Brison 2.4 which is a 40cc on their Yaks and there's many post about the plane and engine. Aerobob also has lots of info and pics of his plane on his web page
http://www.rcaerobats.net
Also on post #341 theres some pictures from a guy that put a DA 50 on this plane.