Well, its modelled with the later, larger trop filter, so its a "later than 42 F.IX" as it is...but its still correctly modelled.
I understand the real MH434 is what its modelled after...
Its 6 of one and 1/2 dozen of the other, they can only make one 3d model of the F.IX, and the F.IX had mods on it during the war Kev, so its not ever going to be possible to take one 3d model and cover every F.IX type there was from 1942-wars end.
As long as what ever one they go with is representative of one that could have been, I think thats as much as we can ask?
Look at the P-51B, it has a malcom hood, but again, they can only do one, so its either canopy "A", or canopy "B". Pick one.