This is a Kitfox II at the Natrona County International Airport.
The Kitfox is just that, a kit. An extremely small tail dragger with, at least in this case, a fabric skin, it's powered by a 64 hp Rotex reciprocating engine.
The Kitfox II was superceded by later models, which seem to have come pretty fast. The company itself went through a bankruptcy and emerged with new owners, so the kits are still available in the newer models.
