During 1961, production commenced on an improved variant of the type, designated as the "MS.760B Paris II", fitted with a pair of Marboré VI 480 kg engines, wingtip fuel tanks, air conditioning, and an enlarged luggage compartment. Following the bankruptcy of Morane-Saulnier in 1961, the company was acquired by aviation firm Potez, who continued development on work on the type for a time. On 24 February 1964, a six-passenger version, designated "MS.760C Paris III", performed its first flight; however, there was ultimately no production of this variant. Production of the Paris II ceased, and production of the Paris III never started as hopes of a substantial order to support its launch went unfulfilled.. During the type's production run, a total of 153 aircraft (of both Paris I and Paris II variants) were manufactured for several different operators, including the French Air Force, the French Navy, the Argentinian Air Force, and the Brazilian Air Force.