Nice work ... oh...but seat cushion needs to be a very dark black/greenish/brownish colour for early, not red brown.
Hmm.... Armour. A vexed question. One of the problems with Edgar's research (and I had the greatest respect for him)was that he tended to assume that if a modification was documented on a date, that it was applied on and after that date. Unfortunately subsequent documentation that has been found and also testing of photographic evidence etc. doesn't provide any consistent evidence to that effect (and plenty the contrary). I think he came to realise that later on, particularly regarding the SRCO.
And so to armour for N3200.
The above shows a "possible" range of dates of between 9/5/40 and 7/2/40. Great stuff!
BUT.
Mod 146 (and Mod 140, the fixed parts) were advanced in Ministry LMC Meeting minute numbers 64 and 65 on 10/11/39 . Each of those went through different other processes on 6 different dates in January between them and finally were "cleared " for action on the 6th Feb 1940!!!
Both N3200 and P9374 rebuilds have rear seat armour but not head armour.
If you look at the photo below, you can see that there is definitely no head armour (the lightening holes of Frame 11 are clearly visible), and somewhere I have a photo of P9374 that shows similar. Great, decided?
Nope! Because you will also notice that the headrest is missing...so this photo is actually great evidence that there WAS a head armour plate that has been removed, as in that case IT would have the head cushion on it.
So, you pays yer money and takes yer chances....
Not to forget either that BOTH of those aircraft were no doubt MANUFACTURED without armour, so there is no need to include it unless you specifically want to represent it at the date of loss or shortly before.