Topic summary
Citabria

Extracted from the Wikipedia article American Champion Citabria.
7GCAA, Citabria 150, Citabria "A" Package, Citabria Adventure
Introduced in 1965, the Champion 7GCAA, like the 7ECA, featured wood-spar wings and oleo-shock main gear. The major difference was in the engine, which in the 7GCAA was a Lycoming O-320-A2B of 150 horsepower (110 kW). Champion switched to spring steel main gear legs in 1967. Bellanca continued production of the 7GCAA as the Citabria "A" Package (a designation apparently begun by Champion), but with no significant design changes. American Champion's 7GCAA, reintroduced in 1997 as the Citabria "Adventure," is similar to earlier versions, with the exception of the metal-spar wings and the use of the Lycoming O-320-B2B engine of 160 horsepower (120 kW); the most recent significant design change has been the switch to aluminum main gear legs in 2004. An "Ultimate Adventure" version, with a SuperiorVantage O-360-A3A2 engine of 180 horsepower (130 kW) and a compositepropeller, is also produced by American Champion.