Complex sentence: Revised production version, with modified structure to ease production, powered by 90 hp Cataract II engine or 90 hp Cirrus Minor, 107 built (60 with Cataract, 47 with Cirrus).
Split into simpler sentences: Revised production version, with modified structure to ease production, powered by 90 hp Cataract II engine or 90 hp Cirrus Minor. A total of 107 were built (60 with Cataract, 47 with Cirrus).