How about Fiat CMASA MF-5 delivative? Little large?
http://www.airwar.ru/enc/flyboat/mf5.html
"MF intelligence followed. 4 CMASA company established transport flying boat MF. 5. It was developed on the basis of bylabyla Wal aircraft. InženerGvido Gaudi (Guido Guidi) seriously reworked the design of German boats creating your project. MF. 5 wing was parasol-type and was sponsonami on the body for better stability on the water. The aircraft was capable of carrying up to 10 passengers and was powered by two V-shaped engines Fiat a. 24R with a capacity of 750 HP (559 kW) installed in tandem with tractor and pusher propellers.
The first prototype aircraft (MM. 270) with propeller made his flight in December 1931 year. The second prototype (MM. 271) flew on September 10, 1933 year already with three propeller.
By this time, the competition for civil transport boat was cancelled and both prototypes were transferred to S.A.N.A. (Società Anonima Navigazione Aerea) in Genoa. There the boats got civil registration numbers MM. 270-I-AZEF and MM. 271-I-AZER and were used for flights in the Western Mediterranean Sea. After takeover Ala Littoria both cars were returned to the Ministry of avaicii."
Wing span, m 23, Aircraft length, m 17.10, Aircraft height, m 5.45, Wing area m2 93.00
Mass, kg, empty aircraft 5210, maximum takeoff 7550
Engine type 2 DD Fiat a. 24R, Power, HP 2 x 750
Maximum speed, km/h 225, Cruising speed, km/h 185, Range, km 1850, Service ceiling, m 3200
Crew, pers 2-3, Payload: up to 10 passengers