So, in a paraphrased nutshell, what we've got is ...
The SAIMAN 303 was in an advanced construction stage. Seen as a logical successor to the SAIMAN 202 trainer, the 303 was designed by Chief Designer, Ing Mario Bottini, in the Spring of 1943 as a response to Regia Aeronautica interest in a single type for primary training (incl. Ro.41 replacement).
The 303 retained the side-by-side seating of the 202 but had a retractable undercarriage [the 202 had a fixed, spatted gear] and a 280 hp Hirth HM. 508 D inline [the 202 had a 130 hp Alfa Romeo 110]. Externally, the 303 is said to resemble the 202 but with a more elegant fuselage shape.
SAIMAN 303 construction reached the 80% complete stage - fuselage completed, motor mounts and tailplane installed in preparation for attachment of the wings.
Oh, and also mention of Sergio Stefanutti's light attack V.A.L. being constructed by SAIMAN.