Squadron hacks usually had their guns removed which is a no no as far as AH fighter skins are concerned. That's why we can skin an armed photo recon Spit but not an unarmed one.
Soit seems Kev's NMF Spit 16 is ineligible as an AH skin in lots of ways; it was an early Mk 9 and not a 16, was not armed, didn't see combat and was probably post-war. There are some NMF early Spit 9s that did see combat that I can skin as an AH Mk 9, but no NMF Mk 16s or late Mk 9s that saw combat and so I can skin as a Mk 16 that I know of. A late Mk 9 can be skinned as a Mk 16 as the only fundamental difference between them was where the engine was made. However for me to do so the Spit in question would have to resemble our Mk 16 to a degree. Have the larger vertical tail, and either the E wing and/or the clipped wing tips.