This is the rare Hawk Industries GAF-125 GAFHawk 125, seen here on 11 June 2006 in storage at All West Airport near Delta Junction, AK. Only one prototype was built.
The aircraft originally flew with a PT6-45R turbo engine, but this has been replaced with a big radial engine in the early 1990s. The company logo of Hawk Industries is still featured on the tail, and the fuel tank is clearly visible on top of the fuselage between the wings.