Italian Kits Wings is to release a 1/48th (and later in 1/32nd !) SAI-Ambrosini S.S.4 resin kit - ref. IKW4820
Source: http://www.italiankits.it/italiankits.html
About the SS4: https://en.wikipedia.org/wiki/Ambrosini_SS.4
V.P.
After the 1/48th model (link) Italian Kits Wings is to release a 1/32nd SAI-Ambrosini S.S.4 resin kit - ref. IKW3202
Source: http://www.italiankits.it/itkitswings32.html
V.P.