Loving this build, so is this section above from only one piece of metal? Perhaps there is a join there somewhere but can't see it?
Normally the fuselage station frames from Sta #6 aft are made from 4 separate sections. I have made some like this. Others I have made from two halves and some in one piece. For Sta #11, there are two different splice plates for the side joins depending on the type of radio fitted, U.S or British. Not sure what 3220 had at this stage.
My original source of 0.3mm aluminium has run out and replacement material from various sites has been more ductile. Great for forming shapes but not so good for stiffness when trying to align all the frames and add stringers etc.
This is the last fuselage station to be built, so joining all the sub sections can start.
All RNZAF P-40s were outfitted with American radio gear, either SCR-274N (HF) or SCR-522 (VHF). However the change-over was usually undertaken "in the field", from about Feb/March 1944 for aircraft in the forward area (which had top priority, aircraft located at Torokina/Bougainville and Henderson Field/Guadalcanal), and much later for the aircraft in NZ used for training, at Ohakea and Ardmore. It is likely that all (or at least most) aircraft were factory-equipped with the HF sets, with the VHF sets being fitted by RNZAF when they eventually became available during 1944. These radios were fitted to all RNZAF P-40s, regardless of model. David D