RE: please identify this engine
That must be where they are coming from then. With the cost of the newer chicom 30cc engines and how well they perform it's not worth it to buy parts to convert these engines . Now if you have parts lying around, or have a machine shop with aluminum stock and time on your hands then that's a different story.
The Evra for sale above would be good for a 120 size cub, biplane, warbird to fly it scale. Just use it as a lugger.