Complex sentence: The aircraft's flying tests were successful and in 1957 Weick was invited to join Piper at Vero Beach and the AG-3 was renamed the PA-25 Pawnee and was re-engined with a 150 hp Lycoming O-320-A1A engine.
Split into simpler sentences: The aircraft's flying tests were successful and in 1957 Weick was invited to join Piper at Vero Beach and the AG-3 was renamed the PA-25 Pawnee. The engine was upgraded to a 150 hp Lycoming O-320-A1A engine.