I am planning to use the exhaust system that Mark H. Beierle has designed for his Earthstar aircraft. His exhaust sits above the engine. Jerry from Green Sky Adventures is interested in using an exhaust system that sits below the engine. Below are some pictures that should help see if that type of exhaust system will fit.
The exhaust pipes will need to squeeze between the flaps which are roughly 14 inches apart. This will need to be done within the first 8 inches of pipe measured from where they leave the engine.
