Complex sentence: Essentially the Comp Air 7 design with its fuselage stretched by 2 feet (0.6 m), it is configured as a conventional high-wing monoplane with optional tailwheel or tricycle undercarriage.
Split into simpler sentences: Essentially the Comp Air 7 design with its fuselage was stretched by 2 feet (0.6 m). The Comp Air 8 is configured as a conventional high-wing monoplane with optional tailwheel or tricycle undercarriage.