I'm in the process of building an Eduard I-16, type 10 in the markings of the Spanish Civil War. I bought the Osprey book on Republican aces and it shows an I-16 with an opening on the forward starboard fuselage not common to standard I-16s. Anyone know what this is or have any decent images they can share. I believe they changed engines and armament for the Super Moscas. Thanks for your help.