Russ,

Here are some pictures on the Schleicher Wankel Austro Engines  powered
motor glider. Not a lot of room in there for a turbo but it could
be done. I'll take some more pictures next week.

http://www.alexander-schleicher.de/main_text_e.htm

Over 500 of these gliders have been built with
Austro Wankel certified one rotor power. Currently the engine is
only 50 HP but a larger 70 HP version is in the works. Hopefully
they will announce it at Aero this year.

Paul Lamar