This KZ VIII built by Hardy Vad Ilskov is modified with a 180 hp injection engine and constant speed propeller instead of the original 145 hp. Gipsy Major X. Seen here at the Roskilde Air Show 2011.
The SAI KZ VIII was an aerobatic sport aircraft first built in Denmark in 1949. It was a low-wing cantilever monoplane of conventional configuration with fixed tailwheel undercarriage and a single seat. The KZ VIII was custom-built by SAI for the Danish aerobatic display team Sylvest Jensen Luftcirkus, in which Peter Steen piloted the aircraft in some 50 performances in summer 1950. At the same time, a full set of parts for a second aircraft was produced, but this was not assembled until 1959.
Canadian Aviation Blog
Roskilde Air Show 2011