The Mantis is long gone. I think that it and the Scorpion were the begining of the real end to the Cox I/C airplanes. The design re-surfaced as the U-Can Too a while back with Norvel but that has since do-do'ed also. I may have one stashed under my work bench, I will look tommorrow.

Back to where this thread started.... I have lots of Cox engines and parts on the shelf....

http://selecthobbies.com/engines.html

and will be adding the Brodak C/L stuff and where Cox has taken itself in the next week or so.